/*
* Copyright 2004-2011 H2 Group. Multiple-Licensed under the H2 License,
* Version 1.0, and under the Eclipse Public License, Version 1.0
* (http://h2database.com/html/license.html).
* Initial Developer: H2 Group
*/
package org.h2.command.ddl;
import org.h2.command.CommandInterface;
import org.h2.constant.ErrorCode;
import org.h2.engine.Database;
import org.h2.engine.FunctionAlias;
import org.h2.engine.Session;
import org.h2.message.DbException;
import org.h2.schema.Schema;
import org.h2.util.StringUtils;
/**
* This class represents the statement
* CREATE ALIAS
*/
public class CreateFunctionAlias extends SchemaCommand {
private String aliasName;
private String javaClassMethod;
private boolean deterministic;
private boolean ifNotExists;
private boolean force;
private String source;
public CreateFunctionAlias(Session session, Schema schema) {
super(session, schema);
}
public int update() {
session.commit(true);
session.getUser().checkAdmin();
Database db = session.getDatabase();
if (getSchema().findFunction(aliasName) != null) {
if (!ifNotExists) {
throw DbException.get(ErrorCode.FUNCTION_ALIAS_ALREADY_EXISTS_1, aliasName);
}
} else {
int id = getObjectId();
FunctionAlias functionAlias;
if (javaClassMethod != null) {
functionAlias = FunctionAlias.newInstance(getSchema(), id, aliasName, javaClassMethod, force);
} else {
functionAlias = FunctionAlias.newInstanceFromSource(getSchema(), id, aliasName, source, force);
}
functionAlias.setDeterministic(deterministic);
db.addSchemaObject(session, functionAlias);
}
return 0;
}
public void setAliasName(String name) {
this.aliasName = name;
}
/**
* Set the qualified method name after removing whitespace.
*
* @param method the qualified method name
*/
public void setJavaClassMethod(String method) {
this.javaClassMethod = StringUtils.replaceAll(method, " ", "");
}
public void setIfNotExists(boolean ifNotExists) {
this.ifNotExists = ifNotExists;
}
public void setForce(boolean force) {
this.force = force;
}
public void setDeterministic(boolean deterministic) {
this.deterministic = deterministic;
}
public void setSource(String source) {
this.source = source;
}
public int getType() {
return CommandInterface.CREATE_ALIAS;
}
}