text: /*
   * Copyright (c) 2016, SRCH2
   * All rights reserved.
   * 
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are met:
   *    * Redistributions of source code must retain the above copyright
   *      notice, this list of conditions and the following disclaimer.
   *    * Redistributions in binary form must reproduce the above copyright
   *      notice, this list of conditions and the following disclaimer in the
   *      documentation and/or other materials provided with the distribution.
   *    * Neither the name of the SRCH2 nor the
   *      names of its contributors may be used to endorse or promote products
   *      derived from this software without specific prior written permission.
   * 
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
   * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED. IN NO EVENT SHALL SRCH2 BE LIABLE FOR ANY
   * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
   * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
   * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  #include "Attribute.h"
  #include<string>
  #include<cassert>
  
  class StringEngine {
   
    /** Encapsulates the instance language around a Java RefiningString object
        used by the particular JVM housing the Java side of this Engine */
    const JNIClass::Attribute<std::string>
      refiningString, searchableString, indexedString;
  
    /*  The stored value of this Engine */
    std::string value;
  
   public:
    /* Warning: this variable make this class thread unsafe, only
       a single thread may access a given instance of this class.
    
       The JVM context of the Java side of this Engine on a particular bridged
       call.
     */
    JNIEnv *env;
  
    StringEngine(jmethodID getValue,
        jclass refiningStringClassPtr, jmethodID refiningConstructor,
        jclass searchableStringClassPtr, jmethodID searchableConstructor,
        jclass indexedStringClassPtr, jmethodID indexedConstructor)
      : refiningString(this->env, refiningStringClassPtr,
            getValue, searchableConstructor),
        searchableString(this->env, searchableStringClassPtr,
           getValue, searchableConstructor),
        indexedString(this->env, indexedStringClassPtr,
            getValue, indexedConstructor) {}
  
    /* returns a Java RefiningString instance with value equivalent
       to the string contained this Engine. */
    jobject getRefiningString();
    /* returns a Java SearchableString instance with value equivalent
       to the string contained this Engine. */
    jobject getSearchableString();
    /* returns a Java IndexedString instance with value equivalent
       to the string contained this Engine. */
    jobject getIndexedString();
   
    /* Stores a new string value in this Engine, equivalent to the value of
       given StringAttribute. */
    void setString(jobject);
  };
  
  