/*
* 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.translator.jdbc.redshift;
import java.sql.Connection;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.List;
import org.teiid.translator.SourceSystemFunctions;
import org.teiid.translator.Translator;
import org.teiid.translator.TranslatorException;
import org.teiid.translator.TypeFacility;
import org.teiid.translator.jdbc.postgresql.PostgreSQLExecutionFactory;
/**
* Translator class for Red Shift.
*/
@Translator(name="redshift", description="A translator for Redshift")
public class RedshiftExecutionFactory extends PostgreSQLExecutionFactory {
@Override
public void start() throws TranslatorException {
super.start();
getFunctionModifiers().remove(SourceSystemFunctions.SUBSTRING); //redshift doesn't use substr
//to_timestamp is not supported
this.parseModifier.setPrefix("TO_DATE("); //$NON-NLS-1$
}
@Override
public void intializeConnectionAfterCancel(Connection c)
throws SQLException {
//cancel can leave the connection in an invalid state, issue another query to clear any flags
Statement s = c.createStatement();
try {
s.execute("select 1"); //$NON-NLS-1$
} finally {
s.close();
}
}
@Override
public boolean hasTimeType() {
return false;
}
@Override
public boolean supportsConvert(int fromType, int toType) {
if (toType == TypeFacility.RUNTIME_CODES.TIME) {
return false;
}
return super.supportsConvert(fromType, toType);
}
@Override
public List<String> getSupportedFunctions() {
List<String> functions = super.getSupportedFunctions();
functions.remove(SourceSystemFunctions.ASCII);
return functions;
}
@Override
public boolean supportsQuantifiedCompareCriteriaAll() {
return false;
}
@Override
public boolean supportsQuantifiedCompareCriteriaSome() {
return false;
}
@Override
public Object convertToken(String group) {
//timezone not supported
if (group.charAt(0) == 'Z') {
throw new IllegalArgumentException();
}
//TODO: time fields are probably not supported for parsing
return super.convertToken(group);
}
}