org.h2.command.ddl.DropSynonym Maven / Gradle / Ivy
/*
* Copyright 2004-2019 H2 Group. Multiple-Licensed under the MPL 2.0,
* and the EPL 1.0 (https://h2database.com/html/license.html).
* Initial Developer: H2 Group
*/
package org.h2.command.ddl;
import org.h2.api.ErrorCode;
import org.h2.command.CommandInterface;
import org.h2.engine.Session;
import org.h2.message.DbException;
import org.h2.schema.Schema;
import org.h2.table.TableSynonym;
/**
* This class represents the statement
* DROP SYNONYM
*/
public class DropSynonym extends SchemaCommand {
private String synonymName;
private boolean ifExists;
public DropSynonym(Session session, Schema schema) {
super(session, schema);
}
public void setSynonymName(String name) {
this.synonymName = name;
}
@Override
public int update() {
session.commit(true);
session.getUser().checkAdmin();
TableSynonym synonym = getSchema().getSynonym(synonymName);
if (synonym == null) {
if (!ifExists) {
throw DbException.get(ErrorCode.TABLE_OR_VIEW_NOT_FOUND_1, synonymName);
}
} else {
session.getDatabase().removeSchemaObject(session, synonym);
}
return 0;
}
public void setIfExists(boolean ifExists) {
this.ifExists = ifExists;
}
@Override
public int getType() {
return CommandInterface.DROP_SYNONYM;
}
}