Package org.teiid.dqp.internal.datamgr

Source Code of org.teiid.dqp.internal.datamgr.ProcedureBatchHandler

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* See the COPYRIGHT.txt file distributed with this work for information
* regarding copyright ownership.  Some portions may be licensed
* to Red Hat, Inc. under one or more contributor license agreements.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA.
*/

/**
*
*/
package org.teiid.dqp.internal.datamgr;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;

import org.teiid.language.Argument;
import org.teiid.language.Call;
import org.teiid.language.Argument.Direction;
import org.teiid.query.QueryPlugin;
import org.teiid.translator.ProcedureExecution;
import org.teiid.translator.TranslatorException;


class ProcedureBatchHandler {
  private Call proc;
  private ProcedureExecution procExec;
  private int paramCols = 0;
  private int resultSetCols = 0;
  private List filler;
   
  public ProcedureBatchHandler(Call proc, ProcedureExecution procExec) {
    this.proc = proc;
    this.procExec = procExec;
        List<Argument> params = proc.getArguments();
        resultSetCols = proc.getResultSetColumnTypes().length;
        if (proc.getReturnType() != null) {
          paramCols++;
        }
        if(params != null && !params.isEmpty()){
          for (Argument param : params) {
                if(param.getDirection() == Direction.OUT || param.getDirection() == Direction.INOUT){
                    paramCols += 1;
                }
            }
        }
        if (paramCols > 0) {
          filler = Collections.nCopies(paramCols, null);
        }
  }
 
  List padRow(List row) throws TranslatorException {
        if (row.size() != resultSetCols) {
            throw new TranslatorException(QueryPlugin.Util.getString("ConnectorWorker.ConnectorWorker_result_set_unexpected_columns", new Object[] {proc, new Integer(resultSetCols), new Integer(row.size())})); //$NON-NLS-1$
        }
        if (paramCols == 0) {
          return row;
        }
        List result = new ArrayList(resultSetCols + paramCols);
        result.addAll(row);
        result.addAll(filler);
        return result;
  }
 
  List getParameterRow() throws TranslatorException {
    if (paramCols == 0) {
      return null;
    }
        List<Object> result = new ArrayList<Object>(Arrays.asList(new Object[resultSetCols]));
        result.addAll(procExec.getOutputParameterValues());
        return result;
  }
 
}
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