/**
* SqlJetTableIndexConstraint.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 java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import org.antlr.runtime.tree.CommonTree;
import org.tmatesoft.sqljet.core.schema.SqlJetConflictAction;
/**
* @author TMate Software Ltd.
* @author Dmitry Stadnik (dtrace@seznam.cz)
*/
public abstract class SqlJetTableIndexConstraint extends SqlJetTableConstraint {
private List<String> columns;
private SqlJetConflictAction conflictAction;
private String indexName;
public SqlJetTableIndexConstraint(String name, CommonTree ast) {
super(name);
CommonTree columnsNode = (CommonTree) ast.getChild(0);
assert "columns".equalsIgnoreCase(columnsNode.getText());
List<String> columns = new ArrayList<String>();
for (int i = 0; i < columnsNode.getChildCount(); i++) {
CommonTree child = (CommonTree) columnsNode.getChild(i);
columns.add(child.getText());
}
this.columns = Collections.unmodifiableList(columns);
if (ast.getChildCount() > 1) {
CommonTree child = (CommonTree) ast.getChild(1);
assert "conflict".equalsIgnoreCase(child.getText());
assert child.getChildCount() == 1;
child = (CommonTree) child.getChild(0);
conflictAction = SqlJetConflictAction.decode(child.getText());
}
}
public List<String> getColumns() {
return columns;
}
public SqlJetConflictAction getConflictAction() {
return conflictAction;
}
protected abstract String getConstraintName();
public String getIndexName() {
return indexName;
}
void setIndexName(String indexName) {
this.indexName = indexName;
}
@Override
public String toString() {
StringBuffer buffer = new StringBuffer();
buffer.append(super.toString());
if (buffer.length() > 0) {
buffer.append(' ');
}
buffer.append(getConstraintName());
buffer.append(" (");
for (int i = 0; i < getColumns().size(); i++) {
if (i > 0) {
buffer.append(", ");
}
buffer.append(getColumns().get(i));
}
buffer.append(')');
if (conflictAction != null) {
buffer.append(" ON CONFLICT ");
buffer.append(conflictAction);
}
return buffer.toString();
}
}