/**
* SqlJetForeignKeyDeferrable.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.schema.ISqlJetForeignKeyDeferrable;
/**
* @author TMate Software Ltd.
* @author Dmitry Stadnik (dtrace@seznam.cz)
*/
public class SqlJetForeignKeyDeferrable implements ISqlJetForeignKeyDeferrable {
private final boolean not, deferred, immediate;
public SqlJetForeignKeyDeferrable(CommonTree ast) {
assert "deferrable".equalsIgnoreCase(ast.getText());
boolean not = false, deferred = false, immediate = false;
for (int i = 0; i < ast.getChildCount(); i++) {
CommonTree child = (CommonTree) ast.getChild(i);
if ("not".equalsIgnoreCase(child.getText())) {
assert !not;
not = true;
} else if ("deferred".equalsIgnoreCase(child.getText())) {
assert !deferred;
assert !immediate;
deferred = true;
} else if ("immediate".equalsIgnoreCase(child.getText())) {
assert !deferred;
assert !immediate;
immediate = true;
} else {
assert false;
}
}
this.not = not;
this.deferred = deferred;
this.immediate = immediate;
}
public boolean isNot() {
return not;
}
public boolean isInitiallyDeferred() {
return deferred;
}
public boolean isInitiallyImmediate() {
return immediate;
}
@Override
public String toString() {
StringBuffer buffer = new StringBuffer();
if (isNot()) {
buffer.append("NOT ");
}
buffer.append("DEFERRABLE");
if (isInitiallyDeferred()) {
buffer.append(" INITIALLY DEFERRED");
}
if (isInitiallyImmediate()) {
buffer.append(" INITIALLY IMMEDIATE");
}
return buffer.toString();
}
}