/*
* JBoss, Home of Professional Open Source.
* 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.query.processor.relational;
import java.util.List;
import org.teiid.core.TeiidComponentException;
import org.teiid.core.TeiidProcessingException;
import org.teiid.query.sql.lang.Command;
import org.teiid.query.sql.lang.Criteria;
import org.teiid.query.sql.util.VariableContext;
import org.teiid.query.util.CommandContext;
public class DependentProcedureAccessNode extends AccessNode {
private Criteria inputCriteria;
private List inputReferences;
private List inputDefaults;
// processing state
private DependentProcedureCriteriaProcessor criteriaProcessor;
public DependentProcedureAccessNode(int nodeID,
Criteria crit,
List references,
List defaults) {
super(nodeID);
this.inputCriteria = crit;
this.inputDefaults = defaults;
this.inputReferences = references;
}
/**
* @see org.teiid.query.processor.relational.PlanExecutionNode#clone()
*/
public Object clone() {
DependentProcedureAccessNode copy = new DependentProcedureAccessNode(getID(), inputCriteria,
inputReferences,
inputDefaults);
copy(this, copy);
return copy;
}
public void reset() {
super.reset();
criteriaProcessor = null;
}
public void closeDirect() {
super.closeDirect();
if (criteriaProcessor != null) {
criteriaProcessor.close();
}
}
@Override
public void open() throws TeiidComponentException,
TeiidProcessingException {
CommandContext context = getContext().clone();
context.pushVariableContext(new VariableContext());
this.setContext(context);
DependentProcedureExecutionNode.shareVariableContext(this, context);
super.open();
}
/**
* @see org.teiid.query.processor.relational.AccessNode#prepareNextCommand(org.teiid.query.sql.lang.Command)
*/
protected boolean prepareNextCommand(Command atomicCommand) throws TeiidComponentException, TeiidProcessingException {
if (this.criteriaProcessor == null) {
this.criteriaProcessor = new DependentProcedureCriteriaProcessor(this, (Criteria)inputCriteria.clone(), inputReferences, inputDefaults);
}
if (criteriaProcessor.prepareNextCommand(this.getContext().getVariableContext())) {
return super.prepareNextCommand(atomicCommand);
}
return false;
}
@Override
protected boolean processCommandsIndividually() {
return true;
}
/**
* @see org.teiid.query.processor.relational.PlanExecutionNode#hasNextCommand()
*/
protected boolean hasNextCommand() {
return criteriaProcessor.hasNextCommand();
}
/**
* @return Returns the inputCriteria.
*/
public Criteria getInputCriteria() {
return this.inputCriteria;
}
}