/*
* 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.resolver.command;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
import org.teiid.api.exception.query.QueryMetadataException;
import org.teiid.api.exception.query.QueryResolverException;
import org.teiid.core.TeiidComponentException;
import org.teiid.core.types.DataTypeManager;
import org.teiid.query.QueryPlugin;
import org.teiid.query.metadata.TempMetadataAdapter;
import org.teiid.query.metadata.TempMetadataID;
import org.teiid.query.resolver.CommandResolver;
import org.teiid.query.resolver.util.ResolverUtil;
import org.teiid.query.resolver.util.ResolverVisitor;
import org.teiid.query.sql.ProcedureReservedWords;
import org.teiid.query.sql.lang.Command;
import org.teiid.query.sql.lang.DynamicCommand;
import org.teiid.query.sql.lang.SetClause;
import org.teiid.query.sql.symbol.ElementSymbol;
import org.teiid.query.sql.symbol.GroupSymbol;
public class DynamicCommandResolver implements CommandResolver {
/**
* @see org.teiid.query.resolver.CommandResolver#resolveCommand(org.teiid.query.sql.lang.Command, TempMetadataAdapter, boolean)
*/
public void resolveCommand(Command command, TempMetadataAdapter metadata, boolean resolveNullLiterals)
throws QueryMetadataException, QueryResolverException, TeiidComponentException {
DynamicCommand dynamicCmd = (DynamicCommand)command;
Iterator columns = dynamicCmd.getAsColumns().iterator();
Set groups = new HashSet();
//if there is no into group, just create temp metadata ids
if (dynamicCmd.getIntoGroup() == null) {
while (columns.hasNext()) {
ElementSymbol column = (ElementSymbol)columns.next();
column.setMetadataID(new TempMetadataID(column.getShortCanonicalName(), column.getType()));
}
} else if (dynamicCmd.getIntoGroup().isTempGroupSymbol()) {
while (columns.hasNext()) {
ElementSymbol column = (ElementSymbol)columns.next();
column.setGroupSymbol(new GroupSymbol(dynamicCmd.getIntoGroup().getCanonicalName()));
}
}
ResolverVisitor.resolveLanguageObject(dynamicCmd, groups, dynamicCmd.getExternalGroupContexts(), metadata);
String sqlType = DataTypeManager.getDataTypeName(dynamicCmd.getSql().getType());
String targetType = DataTypeManager.DefaultDataTypes.STRING;
if (!targetType.equals(sqlType) && !DataTypeManager.isImplicitConversion(sqlType, targetType)) {
throw new QueryResolverException(QueryPlugin.Util.getString("DynamicCommandResolver.SQL_String", sqlType)); //$NON-NLS-1$
}
if (dynamicCmd.getUsing() != null && !dynamicCmd.getUsing().isEmpty()) {
for (SetClause clause : dynamicCmd.getUsing().getClauses()) {
ElementSymbol id = clause.getSymbol();
id.setGroupSymbol(new GroupSymbol(ProcedureReservedWords.DVARS));
id.setType(clause.getValue().getType());
id.setMetadataID(new TempMetadataID(id.getCanonicalName(), id.getType()));
}
}
GroupSymbol intoSymbol = dynamicCmd.getIntoGroup();
if (intoSymbol != null) {
if (!intoSymbol.isImplicitTempGroupSymbol()) {
ResolverUtil.resolveGroup(intoSymbol, metadata);
} else {
List symbols = dynamicCmd.getAsColumns();
ResolverUtil.resolveImplicitTempGroup(metadata, intoSymbol, symbols);
}
}
}
}