/*
* 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.language;
import org.teiid.language.visitor.LanguageObjectVisitor;
import org.teiid.metadata.ProcedureParameter;
public class Argument extends BaseLanguageObject implements MetadataReference<ProcedureParameter> {
public enum Direction {
IN,
OUT,
INOUT,
}
private Direction direction;
private Expression argumentValue;
private ProcedureParameter metadataObject;
private Class<?> type;
public Argument(Direction direction, Expression value, Class<?> type, ProcedureParameter metadataObject) {
this.direction = direction;
this.argumentValue = value;
this.metadataObject = metadataObject;
this.type = type;
}
/**
* Typical constructor for an out/return parameter
* @param direction
* @param type
* @param metadataObject
*/
public Argument(Direction direction, Class<?> type, ProcedureParameter metadataObject) {
this.direction = direction;
this.metadataObject = metadataObject;
this.type = type;
}
/**
* Typical constructor for an in/in out parameter
* @param direction
* @param type
* @param metadataObject
*/
public Argument(Direction direction, Literal value, ProcedureParameter metadataObject) {
this.direction = direction;
this.argumentValue = value;
this.metadataObject = metadataObject;
if (value != null) {
this.type = value.getType();
}
}
public Direction getDirection() {
return this.direction;
}
/**
* Get the argument as a {@link Literal} value.
* Will throw a {@link ClassCastException} if the {@link Expression} is not a {@link Literal}.
* @return the value or null if this is an non-in parameter
*/
public Literal getArgumentValue() {
return (Literal)this.argumentValue;
}
public Class<?> getType() {
return type;
}
public void setType(Class<?> type) {
this.type = type;
}
public void acceptVisitor(LanguageObjectVisitor visitor) {
visitor.visit(this);
}
public void setDirection(Direction direction) {
this.direction = direction;
}
public void setArgumentValue(Literal value) {
this.argumentValue = value;
}
@Override
public ProcedureParameter getMetadataObject() {
return this.metadataObject;
}
public void setMetadataObject(ProcedureParameter metadataObject) {
this.metadataObject = metadataObject;
}
public Expression getExpression() {
return this.argumentValue;
}
public void setExpression(Expression ex) {
this.argumentValue = ex;
}
}