/**
* SqlJetColumnDefault.java
* Copyright (C) 2009-2010 TMate Software Ltd
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program 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 General Public License for more details.
*/
package org.tmatesoft.sqljet.core.internal.schema;
import org.antlr.runtime.tree.CommonTree;
import org.tmatesoft.sqljet.core.SqlJetException;
import org.tmatesoft.sqljet.core.schema.ISqlJetColumnDefault;
import org.tmatesoft.sqljet.core.schema.ISqlJetExpression;
import org.tmatesoft.sqljet.core.schema.ISqlJetLiteralValue;
/**
* @author TMate Software Ltd.
* @author Dmitry Stadnik (dtrace@seznam.cz)
*/
public class SqlJetColumnDefault extends SqlJetColumnConstraint implements ISqlJetColumnDefault {
private final ISqlJetExpression expression;
public SqlJetColumnDefault(SqlJetColumnDef column, String name, CommonTree ast) throws SqlJetException {
super(column, name);
assert "default".equalsIgnoreCase(ast.getText());
expression = SqlJetExpression.create((CommonTree) ast.getChild(0));
}
public ISqlJetExpression getExpression() {
return expression;
}
@Override
public String toString() {
StringBuffer buffer = new StringBuffer();
buffer.append(super.toString());
if (buffer.length() > 0) {
buffer.append(' ');
}
buffer.append("DEFAULT ");
ISqlJetExpression expression = getExpression();
if (expression instanceof ISqlJetLiteralValue) {
buffer.append(expression);
} else {
buffer.append("(");
buffer.append(expression);
buffer.append(")");
}
return buffer.toString();
}
}