/**
 *    Copyright 2011 <NAME>-Rust et. al.
 *
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 */

package org.xmlcml.cml.element;


import nu.xom.Attribute;

import org.xmlcml.cml.attribute.DictRefAttribute;
import org.xmlcml.cml.attribute.IdAttribute;
import org.xmlcml.cml.attribute.RefAttribute;
import org.xmlcml.cml.base.CMLAttribute;
import org.xmlcml.cml.base.CMLElement;
import org.xmlcml.cml.base.StringArraySTAttribute;
import org.xmlcml.cml.base.StringSTAttribute;

// end of part 1
/** CLASS DOCUMENTATION */
public abstract class AbstractLink extends CMLElement {
    /** local name*/
    public final static String TAG = "link";
    /** constructor. */    public AbstractLink() {
        super("link");
    }
/** copy constructor.
* deep copy using XOM copy()
* @param old element to copy
*/
    public AbstractLink(AbstractLink old) {
        super((CMLElement) old);
    }
// attribute:   title

    /** cache */
    StringSTAttribute _att_title = null;
    /** A title on an element.
    * No controlled value.
    * @return CMLAttribute
    */
    public CMLAttribute getTitleAttribute() {
        return (CMLAttribute) getAttribute("title");
    }
    /** A title on an element.
    * No controlled value.
    * @return String
    */
    public String getTitle() {
        StringSTAttribute att = (StringSTAttribute) this.getTitleAttribute();
        if (att == null) {
            return null;
        }
        return att.getString();
    }
    /** A title on an element.
    * No controlled value.
    * @param value title value
    * @throws RuntimeException attribute wrong value/type
    */
    public void setTitle(String value) throws RuntimeException {
        StringSTAttribute att = null;
        if (_att_title == null) {
            _att_title = (StringSTAttribute) attributeFactory.getAttribute("title", "link");
            if (_att_title == null) {
                throw new RuntimeException("BUG: cannot process attributeGroupName : title probably incompatible attributeGroupName and attributeName");
            }
        }
        att = new StringSTAttribute(_att_title);
        super.addRemove(att, value);
    }
// attribute:   id

    /** cache */
    IdAttribute _att_id = null;
    /** null
    * @return CMLAttribute
    */
    public CMLAttribute getIdAttribute() {
        return (CMLAttribute) getAttribute("id");
    }
    /** null
    * @return String
    */
    public String getId() {
        IdAttribute att = (IdAttribute) this.getIdAttribute();
        if (att == null) {
            return null;
        }
        return att.getString();
    }
    /** null
    * @param value title value
    * @throws RuntimeException attribute wrong value/type
    */
    public void setId(String value) throws RuntimeException {
        IdAttribute att = null;
        if (_att_id == null) {
            _att_id = (IdAttribute) attributeFactory.getAttribute("id", "link");
            if (_att_id == null) {
                throw new RuntimeException("BUG: cannot process attributeGroupName : id probably incompatible attributeGroupName and attributeName");
            }
        }
        att = new IdAttribute(_att_id);
        super.addRemove(att, value);
    }
// attribute:   convention

    /** cache */
    StringSTAttribute _att_convention = null;
    /** A reference to a convention.
    * There is no controlled vocabulary for conventions, but the author must ensure that the semantics are openly available and that there are mechanisms for implementation. The convention is inherited by all the subelements, 
    * so that a convention for molecule would by default extend to its bond and atom children. This can be overwritten
    *     if necessary by an explicit convention.
    *                     It may be useful to create conventions with namespaces (e.g. iupac:name).
    *     Use of convention will normally require non-STMML semantics, and should be used with
    *     caution. We would expect that conventions prefixed with "ISO" would be useful,
    *     such as ISO8601 for dateTimes.
    *                     There is no default, but the conventions of STMML or the related language (e.g. CML) will be assumed.
    * @return CMLAttribute
    */
    public CMLAttribute getConventionAttribute() {
        return (CMLAttribute) getAttribute("convention");
    }
    /** A reference to a convention.
    * There is no controlled vocabulary for conventions, but the author must ensure that the semantics are openly available and that there are mechanisms for implementation. The convention is inherited by all the subelements, 
    * so that a convention for molecule would by default extend to its bond and atom children. This can be overwritten
    *     if necessary by an explicit convention.
    *                     It may be useful to create conventions with namespaces (e.g. iupac:name).
    *     Use of convention will normally require non-STMML semantics, and should be used with
    *     caution. We would expect that conventions prefixed with "ISO" would be useful,
    *     such as ISO8601 for dateTimes.
    *                     There is no default, but the conventions of STMML or the related language (e.g. CML) will be assumed.
    * @return String
    */
    public String getConvention() {
        StringSTAttribute att = (StringSTAttribute) this.getConventionAttribute();
        if (att == null) {
            return null;
        }
        return att.getString();
    }
    /** A reference to a convention.
    * There is no controlled vocabulary for conventions, but the author must ensure that the semantics are openly available and that there are mechanisms for implementation. The convention is inherited by all the subelements, 
    * so that a convention for molecule would by default extend to its bond and atom children. This can be overwritten
    *     if necessary by an explicit convention.
    *                     It may be useful to create conventions with namespaces (e.g. iupac:name).
    *     Use of convention will normally require non-STMML semantics, and should be used with
    *     caution. We would expect that conventions prefixed with "ISO" would be useful,
    *     such as ISO8601 for dateTimes.
    *                     There is no default, but the conventions of STMML or the related language (e.g. CML) will be assumed.
    * @param value title value
    * @throws RuntimeException attribute wrong value/type
    */
    public void setConvention(String value) throws RuntimeException {
        StringSTAttribute att = null;
        if (_att_convention == null) {
            _att_convention = (StringSTAttribute) attributeFactory.getAttribute("convention", "link");
            if (_att_convention == null) {
                throw new RuntimeException("BUG: cannot process attributeGroupName : convention probably incompatible attributeGroupName and attributeName");
            }
        }
        att = new StringSTAttribute(_att_convention);
        super.addRemove(att, value);
    }
// attribute:   dictRef

    /** cache */
    DictRefAttribute _att_dictref = null;
    /** null
    * @return CMLAttribute
    */
    public CMLAttribute getDictRefAttribute() {
        return (CMLAttribute) getAttribute("dictRef");
    }
    /** null
    * @return String
    */
    public String getDictRef() {
        DictRefAttribute att = (DictRefAttribute) this.getDictRefAttribute();
        if (att == null) {
            return null;
        }
        return att.getString();
    }
    /** null
    * @param value title value
    * @throws RuntimeException attribute wrong value/type
    */
    public void setDictRef(String value) throws RuntimeException {
        DictRefAttribute att = null;
        if (_att_dictref == null) {
            _att_dictref = (DictRefAttribute) attributeFactory.getAttribute("dictRef", "link");
            if (_att_dictref == null) {
                throw new RuntimeException("BUG: cannot process attributeGroupName : dictRef probably incompatible attributeGroupName and attributeName");
            }
        }
        att = new DictRefAttribute(_att_dictref);
        super.addRemove(att, value);
    }
// attribute:   from

    /** cache */
    StringSTAttribute _att_from = null;
    /** The base of one or more links.
    * On link elements the value is the single id of an element within the document or context specified in map@fromRef attributes. It must identify the element uniquely. The reserved value 'null' implies that no mapping has been provided for the object(s) in the 'to' attribute. This implies no semantics but may be used by software to keep count of which elements have been mapped. For multiple targets use 'fromSet'.
    * @return CMLAttribute
    */
    public CMLAttribute getFromAttribute() {
        return (CMLAttribute) getAttribute("from");
    }
    /** The base of one or more links.
    * On link elements the value is the single id of an element within the document or context specified in map@fromRef attributes. It must identify the element uniquely. The reserved value 'null' implies that no mapping has been provided for the object(s) in the 'to' attribute. This implies no semantics but may be used by software to keep count of which elements have been mapped. For multiple targets use 'fromSet'.
    * @return String
    */
    public String getFrom() {
        StringSTAttribute att = (StringSTAttribute) this.getFromAttribute();
        if (att == null) {
            return null;
        }
        return att.getString();
    }
    /** The base of one or more links.
    * On link elements the value is the single id of an element within the document or context specified in map@fromRef attributes. It must identify the element uniquely. The reserved value 'null' implies that no mapping has been provided for the object(s) in the 'to' attribute. This implies no semantics but may be used by software to keep count of which elements have been mapped. For multiple targets use 'fromSet'.
    * @param value title value
    * @throws RuntimeException attribute wrong value/type
    */
    public void setFrom(String value) throws RuntimeException {
        StringSTAttribute att = null;
        if (_att_from == null) {
            _att_from = (StringSTAttribute) attributeFactory.getAttribute("from", "link");
            if (_att_from == null) {
                throw new RuntimeException("BUG: cannot process attributeGroupName : from probably incompatible attributeGroupName and attributeName");
            }
        }
        att = new StringSTAttribute(_att_from);
        super.addRemove(att, value);
    }
// attribute:   to

    /** cache */
    StringSTAttribute _att_to = null;
    /** The target of one or more links.
    * No description
    * @return CMLAttribute
    */
    public CMLAttribute getToAttribute() {
        return (CMLAttribute) getAttribute("to");
    }
    /** The target of one or more links.
    * No description
    * @return String
    */
    public String getTo() {
        StringSTAttribute att = (StringSTAttribute) this.getToAttribute();
        if (att == null) {
            return null;
        }
        return att.getString();
    }
    /** The target of one or more links.
    * No description
    * @param value title value
    * @throws RuntimeException attribute wrong value/type
    */
    public void setTo(String value) throws RuntimeException {
        StringSTAttribute att = null;
        if (_att_to == null) {
            _att_to = (StringSTAttribute) attributeFactory.getAttribute("to", "link");
            if (_att_to == null) {
                throw new RuntimeException("BUG: cannot process attributeGroupName : to probably incompatible attributeGroupName and attributeName");
            }
        }
        att = new StringSTAttribute(_att_to);
        super.addRemove(att, value);
    }
// attribute:   ref

    /** cache */
    RefAttribute _att_ref = null;
    /** null
    * @return CMLAttribute
    */
    public CMLAttribute getRefAttribute() {
        return (CMLAttribute) getAttribute("ref");
    }
    /** null
    * @return String
    */
    public String getRef() {
        RefAttribute att = (RefAttribute) this.getRefAttribute();
        if (att == null) {
            return null;
        }
        return att.getString();
    }
    /** null
    * @param value title value
    * @throws RuntimeException attribute wrong value/type
    */
    public void setRef(String value) throws RuntimeException {
        RefAttribute att = null;
        if (_att_ref == null) {
            _att_ref = (RefAttribute) attributeFactory.getAttribute("ref", "link");
            if (_att_ref == null) {
                throw new RuntimeException("BUG: cannot process attributeGroupName : ref probably incompatible attributeGroupName and attributeName");
            }
        }
        att = new RefAttribute(_att_ref);
        super.addRemove(att, value);
    }
// attribute:   fromType

    /** cache */
    StringSTAttribute _att_fromtype = null;
    /** The type of the base of a link.
    * The local tagname of the referenced element (e.g. 'molecule' or 'peakGroup'). This acts as a partial check on the integrity of the link. Software can assume that the referenced element is of a given tytpe and can create an object supporting that type. 
    * 				This attribute can be attached to the 'map' attribute and requires all contained links to be of this type. This can be overridden by a 'toType' attribute on indivdual links, but it may also be useful to split the map into maps od different link types.
    * 				
    * @return CMLAttribute
    */
    public CMLAttribute getFromTypeAttribute() {
        return (CMLAttribute) getAttribute("fromType");
    }
    /** The type of the base of a link.
    * The local tagname of the referenced element (e.g. 'molecule' or 'peakGroup'). This acts as a partial check on the integrity of the link. Software can assume that the referenced element is of a given tytpe and can create an object supporting that type. 
    * 				This attribute can be attached to the 'map' attribute and requires all contained links to be of this type. This can be overridden by a 'toType' attribute on indivdual links, but it may also be useful to split the map into maps od different link types.
    * 				
    * @return String
    */
    public String getFromType() {
        StringSTAttribute att = (StringSTAttribute) this.getFromTypeAttribute();
        if (att == null) {
            return null;
        }
        return att.getString();
    }
    /** The type of the base of a link.
    * The local tagname of the referenced element (e.g. 'molecule' or 'peakGroup'). This acts as a partial check on the integrity of the link. Software can assume that the referenced element is of a given tytpe and can create an object supporting that type. 
    * 				This attribute can be attached to the 'map' attribute and requires all contained links to be of this type. This can be overridden by a 'toType' attribute on indivdual links, but it may also be useful to split the map into maps od different link types.
    * 				
    * @param value title value
    * @throws RuntimeException attribute wrong value/type
    */
    public void setFromType(String value) throws RuntimeException {
        StringSTAttribute att = null;
        if (_att_fromtype == null) {
            _att_fromtype = (StringSTAttribute) attributeFactory.getAttribute("fromType", "link");
            if (_att_fromtype == null) {
                throw new RuntimeException("BUG: cannot process attributeGroupName : fromType probably incompatible attributeGroupName and attributeName");
            }
        }
        att = new StringSTAttribute(_att_fromtype);
        super.addRemove(att, value);
    }
// attribute:   toType

    /** cache */
    StringSTAttribute _att_totype = null;
    /** The type of the base of a link.
    * 
    * 				The local tagname of the referenced element (e.g. 'molecule' or 'peakGroup'). This acts as a partial check on the integrity of the link. Software can assume that the referenced element is of a given tytpe and can create an object supporting that type.
    * 				This attribute can be attached to the 'map' attribute and requires all contained links to be of this type. This can be overridden by a 'toType' attribute on indivdual links, but it may also be useful to split the map into maps od different link types.
    * 				
    * @return CMLAttribute
    */
    public CMLAttribute getToTypeAttribute() {
        return (CMLAttribute) getAttribute("toType");
    }
    /** The type of the base of a link.
    * 
    * 				The local tagname of the referenced element (e.g. 'molecule' or 'peakGroup'). This acts as a partial check on the integrity of the link. Software can assume that the referenced element is of a given tytpe and can create an object supporting that type.
    * 				This attribute can be attached to the 'map' attribute and requires all contained links to be of this type. This can be overridden by a 'toType' attribute on indivdual links, but it may also be useful to split the map into maps od different link types.
    * 				
    * @return String
    */
    public String getToType() {
        StringSTAttribute att = (StringSTAttribute) this.getToTypeAttribute();
        if (att == null) {
            return null;
        }
        return att.getString();
    }
    /** The type of the base of a link.
    * 
    * 				The local tagname of the referenced element (e.g. 'molecule' or 'peakGroup'). This acts as a partial check on the integrity of the link. Software can assume that the referenced element is of a given tytpe and can create an object supporting that type.
    * 				This attribute can be attached to the 'map' attribute and requires all contained links to be of this type. This can be overridden by a 'toType' attribute on indivdual links, but it may also be useful to split the map into maps od different link types.
    * 				
    * @param value title value
    * @throws RuntimeException attribute wrong value/type
    */
    public void setToType(String value) throws RuntimeException {
        StringSTAttribute att = null;
        if (_att_totype == null) {
            _att_totype = (StringSTAttribute) attributeFactory.getAttribute("toType", "link");
            if (_att_totype == null) {
                throw new RuntimeException("BUG: cannot process attributeGroupName : toType probably incompatible attributeGroupName and attributeName");
            }
        }
        att = new StringSTAttribute(_att_totype);
        super.addRemove(att, value);
    }
// attribute:   fromSet

    /** cache */
    StringArraySTAttribute _att_fromset = null;
    /** A set of ids representing the base of a link.
    * For a partial mapping where a number of 'from' elements are known to link to a number of 'to' elements it can be useful to aggregate these into a single attribute value. The primary use is to assert that n links exist between a set of n 'from' elements and n 'to' elements but that the precise links are unknown. The semantics of the reference are the same as for 'from' and all the elements must be of the same type (which can be specified with 'fromType' either on the link or the containing map). No order information is implied. In general there will be the same number of idRefs in the 'toSet' and all implicit links will share the same attributes (e.g. 'role'). In many cases the sets will be later split into discrete links thorugh further calculation or experiment (e.g. peak assignment). Sets should never be used as a lazy or concise alternative where the all the links are explicitly known. 
    * 				
    * @return CMLAttribute
    */
    public CMLAttribute getFromSetAttribute() {
        return (CMLAttribute) getAttribute("fromSet");
    }
    /** A set of ids representing the base of a link.
    * For a partial mapping where a number of 'from' elements are known to link to a number of 'to' elements it can be useful to aggregate these into a single attribute value. The primary use is to assert that n links exist between a set of n 'from' elements and n 'to' elements but that the precise links are unknown. The semantics of the reference are the same as for 'from' and all the elements must be of the same type (which can be specified with 'fromType' either on the link or the containing map). No order information is implied. In general there will be the same number of idRefs in the 'toSet' and all implicit links will share the same attributes (e.g. 'role'). In many cases the sets will be later split into discrete links thorugh further calculation or experiment (e.g. peak assignment). Sets should never be used as a lazy or concise alternative where the all the links are explicitly known. 
    * 				
    * @return String[]
    */
    public String[] getFromSet() {
        StringArraySTAttribute att = (StringArraySTAttribute) this.getFromSetAttribute();
        if (att == null) {
            return null;
        }
        return att.getStringArray();
    }
    /** A set of ids representing the base of a link.
    * For a partial mapping where a number of 'from' elements are known to link to a number of 'to' elements it can be useful to aggregate these into a single attribute value. The primary use is to assert that n links exist between a set of n 'from' elements and n 'to' elements but that the precise links are unknown. The semantics of the reference are the same as for 'from' and all the elements must be of the same type (which can be specified with 'fromType' either on the link or the containing map). No order information is implied. In general there will be the same number of idRefs in the 'toSet' and all implicit links will share the same attributes (e.g. 'role'). In many cases the sets will be later split into discrete links thorugh further calculation or experiment (e.g. peak assignment). Sets should never be used as a lazy or concise alternative where the all the links are explicitly known. 
    * 				
    * @param value title value
    * @throws RuntimeException attribute wrong value/type
    */
    public void setFromSet(String value) throws RuntimeException {
        StringArraySTAttribute att = null;
        if (_att_fromset == null) {
            _att_fromset = (StringArraySTAttribute) attributeFactory.getAttribute("fromSet", "link");
            if (_att_fromset == null) {
                throw new RuntimeException("BUG: cannot process attributeGroupName : fromSet probably incompatible attributeGroupName and attributeName");
            }
        }
        att = new StringArraySTAttribute(_att_fromset);
        super.addRemove(att, value);
    }
    /** A set of ids representing the base of a link.
    * For a partial mapping where a number of 'from' elements are known to link to a number of 'to' elements it can be useful to aggregate these into a single attribute value. The primary use is to assert that n links exist between a set of n 'from' elements and n 'to' elements but that the precise links are unknown. The semantics of the reference are the same as for 'from' and all the elements must be of the same type (which can be specified with 'fromType' either on the link or the containing map). No order information is implied. In general there will be the same number of idRefs in the 'toSet' and all implicit links will share the same attributes (e.g. 'role'). In many cases the sets will be later split into discrete links thorugh further calculation or experiment (e.g. peak assignment). Sets should never be used as a lazy or concise alternative where the all the links are explicitly known. 
    * 				
    * @param value title value
    * @throws RuntimeException attribute wrong value/type
    */
    public void setFromSet(String[] value) throws RuntimeException {
        if (_att_fromset == null) {
            _att_fromset = (StringArraySTAttribute) attributeFactory.getAttribute("fromSet", "link");
           if (_att_fromset == null) {
               throw new RuntimeException("BUG: cannot process attributeGroupName : fromSet probably incompatible attributeGroupName and attributeName ");
            }
        }
        StringArraySTAttribute att = new StringArraySTAttribute(_att_fromset);
        super.addAttribute(att);
        att.setCMLValue(value);
    }
// attribute:   toSet

    /** cache */
    StringArraySTAttribute _att_toset = null;
    /** A set of ids representing the base of a link.
    * For a partial mapping where a number of 'to' elements are known to link to a number of 'from' elements it can be useful to aggregate these into a single attribute value. The primary use is to assert that n links exist between a set of n 'to' elements and n 'from' elements but that the precise links are unknown. The semantics of the reference are the same as for 'to' and all the elements must be of the same type (which can be specified with 'toType' either on the link or the containing map). No order information is implied. In general there will be the same number of idRefs in the 'fromSet' and all implicit links will share the same attributes (e.g. 'role'). In many cases the sets will be later split into discrete links thorugh further calculation or experiment (e.g. peak assignment). Sets should never be used as a lazy or concise alternative where the all the links are explicitly known. 
    * 				
    * @return CMLAttribute
    */
    public CMLAttribute getToSetAttribute() {
        return (CMLAttribute) getAttribute("toSet");
    }
    /** A set of ids representing the base of a link.
    * For a partial mapping where a number of 'to' elements are known to link to a number of 'from' elements it can be useful to aggregate these into a single attribute value. The primary use is to assert that n links exist between a set of n 'to' elements and n 'from' elements but that the precise links are unknown. The semantics of the reference are the same as for 'to' and all the elements must be of the same type (which can be specified with 'toType' either on the link or the containing map). No order information is implied. In general there will be the same number of idRefs in the 'fromSet' and all implicit links will share the same attributes (e.g. 'role'). In many cases the sets will be later split into discrete links thorugh further calculation or experiment (e.g. peak assignment). Sets should never be used as a lazy or concise alternative where the all the links are explicitly known. 
    * 				
    * @return String[]
    */
    public String[] getToSet() {
        StringArraySTAttribute att = (StringArraySTAttribute) this.getToSetAttribute();
        if (att == null) {
            return null;
        }
        return att.getStringArray();
    }
    /** A set of ids representing the base of a link.
    * For a partial mapping where a number of 'to' elements are known to link to a number of 'from' elements it can be useful to aggregate these into a single attribute value. The primary use is to assert that n links exist between a set of n 'to' elements and n 'from' elements but that the precise links are unknown. The semantics of the reference are the same as for 'to' and all the elements must be of the same type (which can be specified with 'toType' either on the link or the containing map). No order information is implied. In general there will be the same number of idRefs in the 'fromSet' and all implicit links will share the same attributes (e.g. 'role'). In many cases the sets will be later split into discrete links thorugh further calculation or experiment (e.g. peak assignment). Sets should never be used as a lazy or concise alternative where the all the links are explicitly known. 
    * 				
    * @param value title value
    * @throws RuntimeException attribute wrong value/type
    */
    public void setToSet(String value) throws RuntimeException {
        StringArraySTAttribute att = null;
        if (_att_toset == null) {
            _att_toset = (StringArraySTAttribute) attributeFactory.getAttribute("toSet", "link");
            if (_att_toset == null) {
                throw new RuntimeException("BUG: cannot process attributeGroupName : toSet probably incompatible attributeGroupName and attributeName");
            }
        }
        att = new StringArraySTAttribute(_att_toset);
        super.addRemove(att, value);
    }
    /** A set of ids representing the base of a link.
    * For a partial mapping where a number of 'to' elements are known to link to a number of 'from' elements it can be useful to aggregate these into a single attribute value. The primary use is to assert that n links exist between a set of n 'to' elements and n 'from' elements but that the precise links are unknown. The semantics of the reference are the same as for 'to' and all the elements must be of the same type (which can be specified with 'toType' either on the link or the containing map). No order information is implied. In general there will be the same number of idRefs in the 'fromSet' and all implicit links will share the same attributes (e.g. 'role'). In many cases the sets will be later split into discrete links thorugh further calculation or experiment (e.g. peak assignment). Sets should never be used as a lazy or concise alternative where the all the links are explicitly known. 
    * 				
    * @param value title value
    * @throws RuntimeException attribute wrong value/type
    */
    public void setToSet(String[] value) throws RuntimeException {
        if (_att_toset == null) {
            _att_toset = (StringArraySTAttribute) attributeFactory.getAttribute("toSet", "link");
           if (_att_toset == null) {
               throw new RuntimeException("BUG: cannot process attributeGroupName : toSet probably incompatible attributeGroupName and attributeName ");
            }
        }
        StringArraySTAttribute att = new StringArraySTAttribute(_att_toset);
        super.addAttribute(att);
        att.setCMLValue(value);
    }
// attribute:   fromContext

    /** cache */
    StringSTAttribute _att_fromcontext = null;
    /** The context for the 'from' links in a map.
    * A reference to the unique 'id' attribute of an element defining the context for links in a map. This may be required when id attributes may not be unique within a document. The id should either reference an element uniquely or should be taken as the first ancestor (of the map) with such an id.
    * 				This is fairly horrid but may be required when documents are assembled without establishing unique ids (e.g. concatenation of files). As an example a map referencing linked atoms in two molecules might use the containing 'reaction' element as its uniquifying context.
    * 				
    * @return CMLAttribute
    */
    public CMLAttribute getFromContextAttribute() {
        return (CMLAttribute) getAttribute("fromContext");
    }
    /** The context for the 'from' links in a map.
    * A reference to the unique 'id' attribute of an element defining the context for links in a map. This may be required when id attributes may not be unique within a document. The id should either reference an element uniquely or should be taken as the first ancestor (of the map) with such an id.
    * 				This is fairly horrid but may be required when documents are assembled without establishing unique ids (e.g. concatenation of files). As an example a map referencing linked atoms in two molecules might use the containing 'reaction' element as its uniquifying context.
    * 				
    * @return String
    */
    public String getFromContext() {
        StringSTAttribute att = (StringSTAttribute) this.getFromContextAttribute();
        if (att == null) {
            return null;
        }
        return att.getString();
    }
    /** The context for the 'from' links in a map.
    * A reference to the unique 'id' attribute of an element defining the context for links in a map. This may be required when id attributes may not be unique within a document. The id should either reference an element uniquely or should be taken as the first ancestor (of the map) with such an id.
    * 				This is fairly horrid but may be required when documents are assembled without establishing unique ids (e.g. concatenation of files). As an example a map referencing linked atoms in two molecules might use the containing 'reaction' element as its uniquifying context.
    * 				
    * @param value title value
    * @throws RuntimeException attribute wrong value/type
    */
    public void setFromContext(String value) throws RuntimeException {
        StringSTAttribute att = null;
        if (_att_fromcontext == null) {
            _att_fromcontext = (StringSTAttribute) attributeFactory.getAttribute("fromContext", "link");
            if (_att_fromcontext == null) {
                throw new RuntimeException("BUG: cannot process attributeGroupName : fromContext probably incompatible attributeGroupName and attributeName");
            }
        }
        att = new StringSTAttribute(_att_fromcontext);
        super.addRemove(att, value);
    }
// attribute:   toContext

    /** cache */
    StringSTAttribute _att_tocontext = null;
    /** The context for the 'from' links in a map.
    * A reference to the unique 'id' attribute of an element defining the context for links in a map. This may be required when id attributes may not be unique within a document. The id should either reference an element uniquely or should be taken as the first ancestor (of the map) with such an id.
    * 				This is fairly horrid but may be required when documents are assembled without establishing unique ids (e.g. concatenation of files). As an example a map referencing linked atoms in two molecules might use the containing 'reaction' element as its uniquifying context.
    * 				
    * @return CMLAttribute
    */
    public CMLAttribute getToContextAttribute() {
        return (CMLAttribute) getAttribute("toContext");
    }
    /** The context for the 'from' links in a map.
    * A reference to the unique 'id' attribute of an element defining the context for links in a map. This may be required when id attributes may not be unique within a document. The id should either reference an element uniquely or should be taken as the first ancestor (of the map) with such an id.
    * 				This is fairly horrid but may be required when documents are assembled without establishing unique ids (e.g. concatenation of files). As an example a map referencing linked atoms in two molecules might use the containing 'reaction' element as its uniquifying context.
    * 				
    * @return String
    */
    public String getToContext() {
        StringSTAttribute att = (StringSTAttribute) this.getToContextAttribute();
        if (att == null) {
            return null;
        }
        return att.getString();
    }
    /** The context for the 'from' links in a map.
    * A reference to the unique 'id' attribute of an element defining the context for links in a map. This may be required when id attributes may not be unique within a document. The id should either reference an element uniquely or should be taken as the first ancestor (of the map) with such an id.
    * 				This is fairly horrid but may be required when documents are assembled without establishing unique ids (e.g. concatenation of files). As an example a map referencing linked atoms in two molecules might use the containing 'reaction' element as its uniquifying context.
    * 				
    * @param value title value
    * @throws RuntimeException attribute wrong value/type
    */
    public void setToContext(String value) throws RuntimeException {
        StringSTAttribute att = null;
        if (_att_tocontext == null) {
            _att_tocontext = (StringSTAttribute) attributeFactory.getAttribute("toContext", "link");
            if (_att_tocontext == null) {
                throw new RuntimeException("BUG: cannot process attributeGroupName : toContext probably incompatible attributeGroupName and attributeName");
            }
        }
        att = new StringSTAttribute(_att_tocontext);
        super.addRemove(att, value);
    }
// attribute:   role

    /** cache */
    StringSTAttribute _att_role = null;
    /** Role of the object.
    * How the object functions or its position in the architecture. No controlled vocabulary.
    * @return CMLAttribute
    */
    public CMLAttribute getRoleAttribute() {
        return (CMLAttribute) getAttribute("role");
    }
    /** Role of the object.
    * How the object functions or its position in the architecture. No controlled vocabulary.
    * @return String
    */
    public String getRole() {
        StringSTAttribute att = (StringSTAttribute) this.getRoleAttribute();
        if (att == null) {
            return null;
        }
        return att.getString();
    }
    /** Role of the object.
    * How the object functions or its position in the architecture. No controlled vocabulary.
    * @param value title value
    * @throws RuntimeException attribute wrong value/type
    */
    public void setRole(String value) throws RuntimeException {
        StringSTAttribute att = null;
        if (_att_role == null) {
            _att_role = (StringSTAttribute) attributeFactory.getAttribute("role", "link");
            if (_att_role == null) {
                throw new RuntimeException("BUG: cannot process attributeGroupName : role probably incompatible attributeGroupName and attributeName");
            }
        }
        att = new StringSTAttribute(_att_role);
        super.addRemove(att, value);
    }
// attribute:   href

    /** cache */
    StringSTAttribute _att_href = null;
    /** address of a resource.
    * Links to another element in the same or other file. For dictionary/@dictRef requires the prefix and the physical URI 
    *             address to be contained within the same file. We can anticipate that
    *             better mechanisms will arise - perhaps through XMLCatalogs.
    *             At least it works at present.
    * @return CMLAttribute
    */
    public CMLAttribute getHrefAttribute() {
        return (CMLAttribute) getAttribute("href");
    }
    /** address of a resource.
    * Links to another element in the same or other file. For dictionary/@dictRef requires the prefix and the physical URI 
    *             address to be contained within the same file. We can anticipate that
    *             better mechanisms will arise - perhaps through XMLCatalogs.
    *             At least it works at present.
    * @return String
    */
    public String getHref() {
        StringSTAttribute att = (StringSTAttribute) this.getHrefAttribute();
        if (att == null) {
            return null;
        }
        return att.getString();
    }
    /** address of a resource.
    * Links to another element in the same or other file. For dictionary/@dictRef requires the prefix and the physical URI 
    *             address to be contained within the same file. We can anticipate that
    *             better mechanisms will arise - perhaps through XMLCatalogs.
    *             At least it works at present.
    * @param value title value
    * @throws RuntimeException attribute wrong value/type
    */
    public void setHref(String value) throws RuntimeException {
        StringSTAttribute att = null;
        if (_att_href == null) {
            _att_href = (StringSTAttribute) attributeFactory.getAttribute("href", "link");
            if (_att_href == null) {
                throw new RuntimeException("BUG: cannot process attributeGroupName : href probably incompatible attributeGroupName and attributeName");
            }
        }
        att = new StringSTAttribute(_att_href);
        super.addRemove(att, value);
    }
// attribute:   linkType

    /** cache */
    StringSTAttribute _att_linktype = null;
    /** The type of the link.
    * No description
    * @return CMLAttribute
    */
    public CMLAttribute getLinkTypeAttribute() {
        return (CMLAttribute) getAttribute("linkType");
    }
    /** The type of the link.
    * No description
    * @return String
    */
    public String getLinkType() {
        StringSTAttribute att = (StringSTAttribute) this.getLinkTypeAttribute();
        if (att == null) {
            return null;
        }
        return att.getString();
    }
    /** The type of the link.
    * No description
    * @param value title value
    * @throws RuntimeException attribute wrong value/type
    */
    public void setLinkType(String value) throws RuntimeException {
        StringSTAttribute att = null;
        if (_att_linktype == null) {
            _att_linktype = (StringSTAttribute) attributeFactory.getAttribute("linkType", "link");
            if (_att_linktype == null) {
                throw new RuntimeException("BUG: cannot process attributeGroupName : linkType probably incompatible attributeGroupName and attributeName");
            }
        }
        att = new StringSTAttribute(_att_linktype);
        super.addRemove(att, value);
    }
    /** overrides addAttribute(Attribute)
     * reroutes calls to setFoo()
     * @param att  attribute
    */
    public void addAttribute(Attribute att) {
        String name = att.getLocalName();
        String value = att.getValue();
        if (name == null) {
        } else if (name.equals("title")) {
            setTitle(value);
        } else if (name.equals("id")) {
            setId(value);
        } else if (name.equals("convention")) {
            setConvention(value);
        } else if (name.equals("dictRef")) {
            setDictRef(value);
        } else if (name.equals("from")) {
            setFrom(value);
        } else if (name.equals("to")) {
            setTo(value);
        } else if (name.equals("ref")) {
            setRef(value);
        } else if (name.equals("fromType")) {
            setFromType(value);
        } else if (name.equals("toType")) {
            setToType(value);
        } else if (name.equals("fromSet")) {
            setFromSet(value);
        } else if (name.equals("toSet")) {
            setToSet(value);
        } else if (name.equals("fromContext")) {
            setFromContext(value);
        } else if (name.equals("toContext")) {
            setToContext(value);
        } else if (name.equals("role")) {
            setRole(value);
        } else if (name.equals("href")) {
            setHref(value);
        } else if (name.equals("linkType")) {
            setLinkType(value);
	     } else {
            super.addAttribute(att);
        }
    }
}
