/*
* Copyright 2004-2023 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.schema;
import org.h2.engine.DbObject;
import org.h2.engine.SessionLocal;
import org.h2.expression.ValueExpression;
import org.h2.message.Trace;
import org.h2.value.Value;
/**
* A user-defined constant as created by the SQL statement
* CREATE CONSTANT
*/
public final class Constant extends SchemaObject {
private Value value;
private ValueExpression expression;
public Constant(Schema schema, int id, String name) {
super(schema, id, name, Trace.SCHEMA);
}
@Override
public String getCreateSQL() {
StringBuilder builder = new StringBuilder("CREATE CONSTANT ");
getSQL(builder, DEFAULT_SQL_FLAGS).append(" VALUE ");
return value.getSQL(builder, DEFAULT_SQL_FLAGS).toString();
}
@Override
public int getType() {
return DbObject.CONSTANT;
}
@Override
public void removeChildrenAndResources(SessionLocal session) {
database.removeMeta(session, getId());
invalidate();
}
public void setValue(Value value) {
this.value = value;
expression = ValueExpression.get(value);
}
public ValueExpression getValue() {
return expression;
}
}