/*
* 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.core.types.basic;
import java.sql.Date;
import java.util.regex.Pattern;
import org.teiid.core.types.DataTypeManagerService;
import org.teiid.core.types.Transform;
import org.teiid.runtime.client.Messages;
import org.teiid.runtime.client.TeiidClientException;
public class StringToDateTransform extends Transform {
private static boolean validate = true;
private static Pattern pattern = Pattern.compile("\\d{4}-\\d{2}-\\d{2}"); //$NON-NLS-1$
static {
try {
Date.valueOf("2000-14-01"); //$NON-NLS-1$
} catch (Exception e) {
validate = false;
}
}
/**
* @param dataTypeManager
*/
public StringToDateTransform(DataTypeManagerService dataTypeManager) {
super(dataTypeManager);
}
/**
* This method transforms a value of the source type into a value
* of the target type.
* @param value Incoming value of source type
* @return Outgoing value of target type
* @throws Exception if value is an incorrect input type or
* the transformation fails
*/
public Object transformDirect(Object value) throws Exception {
value = ((String) value).trim();
Date result = null;
try {
result = Date.valueOf( (String) value );
} catch(Exception e) {
if (!validate && pattern.matcher((String)value).matches()) {
throw new TeiidClientException(Messages.gs(Messages.TEIID.TEIID10060, value, getTargetType().getSimpleName()));
}
throw new TeiidClientException(e, Messages.gs(Messages.TEIID.TEIID10061, value));
}
if (!result.toString().equals(value)) {
throw new TeiidClientException(Messages.gs(Messages.TEIID.TEIID10060, value, getTargetType().getSimpleName()));
}
return result;
}
/**
* Type of the incoming value.
* @return Source type
*/
public Class<?> getSourceType() {
return String.class;
}
/**
* Type of the outgoing value.
* @return Target type
*/
public Class<?> getTargetType() {
return Date.class;
}
@Override
public boolean isExplicit() {
return true;
}
}