Program: 119397
Project: 119397
Buggy source:
@Override public ExecutionResult execute(Item item){
  IProxyRepositoryFactory factory=CorePlugin.getDefault().getRepositoryService().getProxyRepositoryFactory();
  ProcessType processType=getProcessType(item);
  boolean modified=false;
  if (processType != null) {
    for (    Object obj : processType.getNode()) {
      NodeType nodeType=(NodeType)obj;
      AbstractExternalData externalData=nodeType.getNodeData();
      if (externalData instanceof DBMapData) {
        DBMapData mapperData=(DBMapData)externalData;
        for (        OutputTable pTable : mapperData.getOutputTables()) {
          int i=0;
          List<FilterEntry> needSplitFilters=new ArrayList<FilterEntry>();
          List<FilterEntry> newFilters=new ArrayList<FilterEntry>();
          for (          FilterEntry pFilter : pTable.getFilterEntries()) {
            String expression=pFilter.getExpression();
            if (expression != null && !expression.trim().isEmpty()) {
              if (!DbGenerationManager.containWith(expression,DbMapSqlConstants.GROUP_BY_PATTERN,false) && !DbGenerationManager.containWith(expression,DbMapSqlConstants.ORDER_BY_PATTERN,false)) {
                continue;
              }
 else               if (DbGenerationManager.containWith(expression,DbMapSqlConstants.GROUP_BY_PATTERN,true) || DbGenerationManager.containWith(expression,DbMapSqlConstants.ORDER_BY_PATTERN,true)) {
                pFilter.setFilterKind(FilterTableEntry.OTHER_FILTER);
                modified=true;
              }
 else {
                needSplitFilters.add(pFilter);
              }
            }
          }
          if (!needSplitFilters.isEmpty()) {
            EList<FilterEntry> entryList=pTable.getFilterEntries();
            for (            FilterEntry pFilter : needSplitFilters) {
              String expression=pFilter.getExpression();
              int splitIndex=firstIndexInString(expression,DbMapSqlConstants.GROUP_BY_PATTERN);
              int orderIndex=firstIndexInString(expression,DbMapSqlConstants.ORDER_BY_PATTERN);
              if (splitIndex < 0 || (0 < orderIndex && orderIndex < splitIndex)) {
                splitIndex=orderIndex;
              }
              String whereClause=expression.substring(0,splitIndex);
              pFilter.setExpression(whereClause);
              FilterEntry tFilter=DbmapFactory.eINSTANCE.createFilterEntry();
              tFilter.setName("String_Node_Str" + ++i);
              tFilter.setExpression(expression.substring(splitIndex));
              tFilter.setFilterKind(FilterTableEntry.OTHER_FILTER);
              entryList.remove(pFilter);
              entryList.add(pFilter);
              newFilters.add(tFilter);
              modified=true;
            }
            if (!newFilters.isEmpty()) {
              pTable.getFilterEntries().addAll(newFilters);
              modified=true;
            }
          }
        }
      }
    }
  }
  try {
    if (modified) {
      factory.save(item,true);
      return ExecutionResult.SUCCESS_WITH_ALERT;
    }
 else {
      return ExecutionResult.SUCCESS_NO_ALERT;
    }
  }
 catch (  Exception e) {
    ExceptionHandler.process(e);
    return ExecutionResult.FAILURE;
  }
}

Fixed version (ground truth):
@Override public ExecutionResult execute(Item item){
  IProxyRepositoryFactory factory=CorePlugin.getDefault().getRepositoryService().getProxyRepositoryFactory();
  ProcessType processType=getProcessType(item);
  boolean modified=false;
  if (processType != null) {
    for (    Object obj : processType.getNode()) {
      NodeType nodeType=(NodeType)obj;
      AbstractExternalData externalData=nodeType.getNodeData();
      if (externalData instanceof DBMapData) {
        DBMapData mapperData=(DBMapData)externalData;
        for (        OutputTable pTable : mapperData.getOutputTables()) {
          int i=0;
          List<FilterEntry> needSplitFilters=new ArrayList<FilterEntry>();
          List<FilterEntry> newFilters=new ArrayList<FilterEntry>();
          for (          FilterEntry pFilter : pTable.getFilterEntries()) {
            String expression=pFilter.getExpression();
            if (expression != null && !expression.trim().isEmpty()) {
              if (!DbGenerationManager.containWith(expression,DbMapSqlConstants.GROUP_BY_PATTERN,false) && !DbGenerationManager.containWith(expression,DbMapSqlConstants.ORDER_BY_PATTERN,false)) {
                continue;
              }
 else {
                needSplitFilters.add(pFilter);
              }
            }
          }
          if (!needSplitFilters.isEmpty()) {
            EList<FilterEntry> entryList=pTable.getFilterEntries();
            for (            FilterEntry pFilter : needSplitFilters) {
              String expression=pFilter.getExpression().trim();
              int splitIndex=firstIndexInString(expression,DbMapSqlConstants.GROUP_BY_PATTERN);
              int orderIndex=firstIndexInString(expression,DbMapSqlConstants.ORDER_BY_PATTERN);
              if (splitIndex < 0 || (0 <= orderIndex && orderIndex < splitIndex)) {
                splitIndex=orderIndex;
              }
              if (splitIndex == 0) {
                pFilter.setFilterKind(FilterTableEntry.OTHER_FILTER);
                entryList.remove(pFilter);
                newFilters.add(pFilter);
              }
 else {
                String whereClause=expression.substring(0,splitIndex);
                if (!DbGenerationManager.containWith(expression,DbMapSqlConstants.OR + "String_Node_Str",true) && !DbGenerationManager.containWith(expression,DbMapSqlConstants.AND + "String_Node_Str",true)) {
                  whereClause=DbMapSqlConstants.AND + "String_Node_Str" + whereClause;
                }
                pFilter.setExpression(whereClause);
                FilterEntry tFilter=DbmapFactory.eINSTANCE.createFilterEntry();
                tFilter.setName("String_Node_Str" + ++i);
                tFilter.setExpression(expression.substring(splitIndex).trim());
                tFilter.setFilterKind(FilterTableEntry.OTHER_FILTER);
                entryList.remove(pFilter);
                entryList.add(pFilter);
                newFilters.add(tFilter);
              }
              modified=true;
            }
            if (!newFilters.isEmpty()) {
              pTable.getFilterEntries().addAll(newFilters);
              modified=true;
            }
          }
        }
      }
    }
  }
  try {
    if (modified) {
      factory.save(item,true);
      return ExecutionResult.SUCCESS_WITH_ALERT;
    }
 else {
      return ExecutionResult.SUCCESS_NO_ALERT;
    }
  }
 catch (  Exception e) {
    ExceptionHandler.process(e);
    return ExecutionResult.FAILURE;
  }
}