/******************************************************************************* | |
* Copyright (c) 1998, 2013 Oracle and/or its affiliates. All rights reserved. | |
* This program and the accompanying materials are made available under the | |
* terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0 | |
* which accompanies this distribution. | |
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html | |
* and the Eclipse Distribution License is available at | |
* http://www.eclipse.org/org/documents/edl-v10.php. | |
* | |
* Contributors: | |
* Oracle - initial API and implementation from Oracle TopLink | |
******************************************************************************/ | |
package org.eclipse.persistence.tools.schemaframework; | |
import java.io.*; | |
import java.util.*; | |
import org.eclipse.persistence.exceptions.*; | |
import org.eclipse.persistence.internal.sessions.AbstractSession; | |
/** | |
* <p> | |
* <b>Purpose</b>: Define a unique key constraint for a table. | |
*/ | |
public class UniqueKeyConstraint implements Serializable { | |
protected String name; | |
protected Vector<String> sourceFields; // field names | |
public UniqueKeyConstraint() { | |
this.name = ""; | |
this.sourceFields = new Vector<String>(); | |
} | |
public UniqueKeyConstraint(String name, String sourceField) { | |
this(); | |
this.name = name; | |
sourceFields.addElement(sourceField); | |
} | |
public UniqueKeyConstraint(String name, String[] sourceFields) { | |
this(); | |
this.name = name; | |
for(String sourceField : sourceFields) { | |
this.sourceFields.addElement(sourceField); | |
} | |
} | |
/** | |
* PUBLIC: | |
*/ | |
public void addSourceField(String sourceField) { | |
getSourceFields().addElement(sourceField); | |
} | |
/** | |
* INTERNAL: | |
* Append the database field definition string to the table creation statement. | |
*/ | |
public void appendDBString(Writer writer, AbstractSession session) { | |
try { | |
writer.write("UNIQUE ("); | |
for (Enumeration sourceEnum = getSourceFields().elements(); | |
sourceEnum.hasMoreElements();) { | |
writer.write((String)sourceEnum.nextElement()); | |
if (sourceEnum.hasMoreElements()) { | |
writer.write(", "); | |
} | |
} | |
writer.write(")"); | |
} catch (IOException ioException) { | |
throw ValidationException.fileError(ioException); | |
} | |
} | |
/** | |
* PUBLIC: | |
*/ | |
public String getName() { | |
return name; | |
} | |
/** | |
* PUBLIC: | |
*/ | |
public Vector<String> getSourceFields() { | |
return sourceFields; | |
} | |
/** | |
* PUBLIC: | |
*/ | |
public void setName(String name) { | |
this.name = name; | |
} | |
/** | |
* PUBLIC: | |
*/ | |
public void setSourceFields(Vector<String> sourceFields) { | |
this.sourceFields = sourceFields; | |
} | |
} | |