package org.apache.ddlutils.task; | |
/* | |
* Licensed to the Apache Software Foundation (ASF) under one | |
* or more contributor license agreements. See the NOTICE file | |
* distributed with this work for additional information | |
* regarding copyright ownership. The ASF licenses this file | |
* to you under the Apache License, Version 2.0 (the | |
* "License"); you may not use this file except in compliance | |
* with the License. You may obtain a copy of the License at | |
* | |
* http://www.apache.org/licenses/LICENSE-2.0 | |
* | |
* Unless required by applicable law or agreed to in writing, | |
* software distributed under the License is distributed on an | |
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | |
* KIND, either express or implied. See the License for the | |
* specific language governing permissions and limitations | |
* under the License. | |
*/ | |
import java.io.File; | |
import java.io.FileWriter; | |
import org.apache.ddlutils.io.DataDtdWriter; | |
import org.apache.ddlutils.model.Database; | |
import org.apache.tools.ant.BuildException; | |
/** | |
* Creates a DTD that specifies the layout for data XML files.<br/> | |
* This sub task does not require a database connection, so the <code>dataSource</code> | |
* sub element of the enclosing task can be omitted. | |
* | |
* @version $Revision: 289996 $ | |
* @ant.task name="writeDtdToFile" | |
*/ | |
public class WriteDtdToFileCommand extends Command | |
{ | |
/** The file to output the DTD to. */ | |
private File _outputFile; | |
/** | |
* Specifies the name of the file to write the DTD to. | |
* | |
* @param outputFile The output file | |
* @ant.required | |
*/ | |
public void setOutputFile(File outputFile) | |
{ | |
_outputFile = outputFile; | |
} | |
/** | |
* {@inheritDoc} | |
*/ | |
public boolean isRequiringModel() | |
{ | |
return true; | |
} | |
/** | |
* {@inheritDoc} | |
*/ | |
public void execute(DatabaseTaskBase task, Database model) throws BuildException | |
{ | |
if (_outputFile == null) | |
{ | |
throw new BuildException("No output file specified"); | |
} | |
if (_outputFile.exists() && !_outputFile.canWrite()) | |
{ | |
throw new BuildException("Cannot overwrite output file " + _outputFile.getAbsolutePath()); | |
} | |
try | |
{ | |
FileWriter outputWriter = new FileWriter(_outputFile); | |
DataDtdWriter dtdWriter = new DataDtdWriter(); | |
dtdWriter.writeDtd(model, outputWriter); | |
outputWriter.close(); | |
_log.info("Written DTD to " + _outputFile.getAbsolutePath()); | |
} | |
catch (Exception ex) | |
{ | |
handleException(ex, "Failed to write to output file " + _outputFile.getAbsolutePath()); | |
} | |
} | |
} |