org.h2.command.ddl.CreateSequence 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.Database;
import org.h2.engine.Session;
import org.h2.message.DbException;
import org.h2.schema.Schema;
import org.h2.schema.Sequence;
/**
* This class represents the statement CREATE SEQUENCE.
*/
public class CreateSequence extends SchemaCommand {
private String sequenceName;
private boolean ifNotExists;
private SequenceOptions options;
private boolean belongsToTable;
public CreateSequence(Session session, Schema schema) {
super(session, schema);
}
public void setSequenceName(String sequenceName) {
this.sequenceName = sequenceName;
}
public void setIfNotExists(boolean ifNotExists) {
this.ifNotExists = ifNotExists;
}
public void setOptions(SequenceOptions options) {
this.options = options;
}
@Override
public int update() {
session.commit(true);
Database db = session.getDatabase();
if (getSchema().findSequence(sequenceName) != null) {
if (ifNotExists) {
return 0;
}
throw DbException.get(ErrorCode.SEQUENCE_ALREADY_EXISTS_1, sequenceName);
}
int id = getObjectId();
Sequence sequence = new Sequence(session, getSchema(), id, sequenceName, options, belongsToTable);
db.addSchemaObject(session, sequence);
return 0;
}
public void setBelongsToTable(boolean belongsToTable) {
this.belongsToTable = belongsToTable;
}
@Override
public int getType() {
return CommandInterface.CREATE_SEQUENCE;
}
}