/*
* 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.mapping.xml;
import java.util.HashMap;
import java.util.Map;
import org.teiid.query.sql.symbol.ElementSymbol;
import org.teiid.query.sql.symbol.GroupSymbol;
/**
* This represents a source node. A source node is which produces results from
* executing a relational query.
*/
public class MappingSourceNode extends MappingBaseNode {
private transient ResultSetInfo resultSetInfo;
private Map symbolMap = new HashMap();
protected MappingSourceNode() {
}
public MappingSourceNode(String source) {
setProperty(MappingNodeConstants.Properties.NODE_TYPE, MappingNodeConstants.SOURCE);
setSource(source);
}
public void acceptVisitor(MappingVisitor visitor) {
visitor.visit(this);
}
public String getResultName() {
return (String) getProperty(MappingNodeConstants.Properties.RESULT_SET_NAME);
}
public String getAliasResultName() {
return (String) getProperty(MappingNodeConstants.Properties.ALIAS_RESULT_SET_NAME);
}
/**
* in the case of recursive node we need to know the original source node name; this represents
* that name.
* @param alias
*/
public void setAliasResultName(String alias) {
setProperty(MappingNodeConstants.Properties.ALIAS_RESULT_SET_NAME, alias);
}
public MappingBaseNode setSource(String source) {
if (source != null) {
setProperty(MappingNodeConstants.Properties.RESULT_SET_NAME, source);
}
return this;
}
public MappingSourceNode getSourceNode() {
return this;
}
public boolean isRootSourceNode() {
return getParentSourceNode() == null;
}
public MappingSourceNode getParentSourceNode() {
MappingBaseNode parent = getParentNode();
while (parent != null) {
if (parent instanceof MappingSourceNode) {
return (MappingSourceNode)parent;
}
parent = parent.getParentNode();
}
return null;
}
public ResultSetInfo getResultSetInfo() {
if (this.resultSetInfo == null) {
this.resultSetInfo = new ResultSetInfo(getActualResultSetName());
setProperty(MappingNodeConstants.Properties.RESULT_SET_INFO, this.resultSetInfo);
}
return this.resultSetInfo;
}
public void setResultSetInfo(ResultSetInfo resultSetInfo) {
this.resultSetInfo = resultSetInfo;
}
public String toString() {
return "[" + getProperty(MappingNodeConstants.Properties.NODE_TYPE) + "]" //$NON-NLS-1$ //$NON-NLS-2$
+ getProperty(MappingNodeConstants.Properties.RESULT_SET_NAME);
}
public Map getSymbolMap() {
return this.symbolMap;
}
public void setSymbolMap(Map symbolMap) {
this.symbolMap = symbolMap;
updateSymbolMapDependentValues();
}
public void updateSymbolMapDependentValues() {
// based on the symbol map modify the getalias name
if (getAliasResultName() != null) {
GroupSymbol newGroup = getMappedSymbol(new GroupSymbol(getAliasResultName()));
setAliasResultName(newGroup.getName());
}
ElementSymbol mappingClassSymbol = this.getResultSetInfo().getMappingClassSymbol();
if (mappingClassSymbol != null) {
this.getResultSetInfo().setMappingClassSymbol(getMappedSymbol(mappingClassSymbol));
}
}
public String getActualResultSetName() {
GroupSymbol group = getMappedSymbol(new GroupSymbol(getResultName()));
return group.getName();
}
public Map buildFullSymbolMap() {
HashMap map = new HashMap();
MappingSourceNode sourceNode = this;
while(sourceNode != null) {
map.putAll(sourceNode.getSymbolMap());
sourceNode = sourceNode.getParentSourceNode();
}
return map;
}
public ElementSymbol getMappedSymbol(ElementSymbol symbol) {
ElementSymbol mappedSymbol = (ElementSymbol)symbolMap.get(symbol);
if (mappedSymbol == null) {
MappingSourceNode parentSourceNode = getParentSourceNode();
if (parentSourceNode != null) {
return parentSourceNode.getMappedSymbol(symbol);
}
}
if (mappedSymbol == null) {
return symbol;
}
return mappedSymbol;
}
public GroupSymbol getMappedSymbol(GroupSymbol symbol) {
GroupSymbol mappedSymbol = (GroupSymbol)symbolMap.get(symbol);
if (mappedSymbol == null) {
MappingSourceNode parentSourceNode = getParentSourceNode();
if (parentSourceNode != null) {
return parentSourceNode.getMappedSymbol(symbol);
}
}
if (mappedSymbol == null) {
return symbol;
}
return mappedSymbol;
}
}