/*
* JBoss, Home of Professional Open Source.
* See the COPYRIGHT.txt file distributed with this work for information
* regarding copyright ownership. Some portions may be licensed
* to Red Hat, Inc. under one or more contributor license agreements.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA.
*/
package org.teiid.query.sql.lang;
import java.util.List;
import org.teiid.core.util.EquivalenceUtil;
import org.teiid.core.util.HashCodeUtil;
import org.teiid.query.sql.LanguageVisitor;
import org.teiid.query.sql.symbol.GroupSymbol;
import org.teiid.query.sql.visitor.SQLStringVisitor;
/**
* @since 5.5
*/
public class Drop extends Command implements TargetedCommand {
/** Identifies the table to be dropped. */
private GroupSymbol table;
public GroupSymbol getTable() {
return table;
}
@Override
public GroupSymbol getGroup() {
return table;
}
public void setTable(GroupSymbol table) {
this.table = table;
}
/**
* @see org.teiid.query.sql.lang.Command#getType()
* @since 5.5
*/
public int getType() {
return Command.TYPE_DROP;
}
/**
* @see org.teiid.query.sql.lang.Command#clone()
* @since 5.5
*/
public Object clone() {
Drop drop = new Drop();
GroupSymbol copyTable = (GroupSymbol) table.clone();
drop.setTable(copyTable);
copyMetadataState(drop);
return drop;
}
/**
* @see org.teiid.query.sql.lang.Command#getProjectedSymbols()
* @since 5.5
*/
public List getProjectedSymbols() {
return Command.getUpdateCommandSymbol();
}
/**
* @see org.teiid.query.sql.lang.Command#areResultsCachable()
* @since 5.5
*/
public boolean areResultsCachable() {
return false;
}
/**
* @see org.teiid.query.sql.LanguageObject#acceptVisitor(org.teiid.query.sql.LanguageVisitor)
* @since 5.5
*/
public void acceptVisitor(LanguageVisitor visitor) {
visitor.visit(this);
}
public int hashCode() {
int myHash = 0;
myHash = HashCodeUtil.hashCode(myHash, this.table);
return myHash;
}
public String toString() {
return SQLStringVisitor.getSQLString(this);
}
public boolean equals(Object obj) {
// Quick same object test
if(this == obj) {
return true;
}
// Quick fail tests
if(!(obj instanceof Drop)) {
return false;
}
Drop other = (Drop) obj;
return EquivalenceUtil.areEqual(getTable(), other.getTable());
}
}