text: /**************************************************************************
   // @@@ START COPYRIGHT @@@
   //
   // Licensed to the Apache Software Foundation (ASF) under one
   // or more contributor license agreements.  See the NOTICE file
   // distributed with this work for additional information
   // regarding copyright ownership.  The ASF licenses this file
   // to you 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.
   //
   // @@@ END COPYRIGHT @@@
   **************************************************************************/
  //
  // MODULE: SQLMXClobReader.cpp
  //
  #include <platform_ndcs.h>
  #include <sql.h>
  #include <sqlext.h>
  #include "JdbcDriverGlobal.h"
  #include "org_apache_trafodion_jdbc_t2_SQLMXClobReader.h"
  #include "SQLMXCommonFunctions.h"
  #include "CoreCommon.h"
  #include "SrvrCommon.h"
  #include "SrvrOthers.h"
  #include "CSrvrConnect.h"
  #include "Debug.h"
  #include "GlobalInformation.h"
  #include "sqlcli.h"
  
  JNIEXPORT jint JNICALL Java_org_apache_trafodion_jdbc_t2_SQLMXClobReader_readChunk
    (JNIEnv *jenv, jobject jobj, jstring jServer, jlong jDialogueId, jint jExtractMode, jstring jLobLocator, jobject jCharBuffer)
  {
     odbc_SQLsrvr_ExtractLob_exc_ exception = {0,0,0};
     BYTE *chunkBuf = (BYTE *)jenv->GetDirectBufferAddress(jCharBuffer);
     jlong jLength = jenv->GetDirectBufferCapacity(jCharBuffer);
     const char *lobLocator = jenv->GetStringUTFChars(jLobLocator, NULL);
     IDL_long_long  lobLength = 0; // Used when extractMode is 0 
     IDL_long_long  extractLen = jLength;
  
     odbc_SQLSrvr_ExtractLob_sme_(NULL, NULL, &exception, jDialogueId, jExtractMode, 
                  (IDL_char *)lobLocator, lobLength, extractLen, chunkBuf);
     jenv->ReleaseStringUTFChars(jLobLocator, lobLocator);
     switch (exception.exception_nr) {
        case CEE_SUCCESS:
           return extractLen;
        case odbc_SQLSvc_ExtractLob_SQLError_exn_:
           throwSQLException(jenv, &exception.u.SQLError);
           break;
        case odbc_SQLSvc_ExtractLob_SQLInvalidhandle_exn_:
           throwSQLException(jenv, MODULE_ERROR, exception.u.ParamError.ParamDesc, "HY000");
           break;
        case odbc_SQLSvc_ExtractLob_InvalidConnect_exn_:
        default:
           throwSQLException(jenv, PROGRAMMING_ERROR, NULL, "HY000", exception.exception_nr);
           break;
     }
     return -1;
  }
  