/*
* 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 java.util.ArrayList;
import java.util.List;
import org.teiid.language.visitor.LanguageObjectVisitor;
import org.teiid.metadata.FunctionMethod;
/**
* Represents a function. A function has a name and 0..n
* Expressions that are parameters.
*/
public class Function extends BaseLanguageObject implements Expression, MetadataReference<FunctionMethod> {
private String name;
private List<Expression> parameters;
private Class<?> type;
private FunctionMethod metadataObject;
public Function(String name, List<? extends Expression> params, Class<?> type) {
this.name = name;
if (params == null) {
this.parameters = new ArrayList<Expression>(0);
} else {
this.parameters = new ArrayList<Expression>(params);
}
this.type = type;
}
@Override
public FunctionMethod getMetadataObject() {
return metadataObject;
}
public void setMetadataObject(FunctionMethod metadataObject) {
this.metadataObject = metadataObject;
}
/**
* Get name of the function
* @return Function name
*/
public String getName() {
return this.name;
}
/**
* Get the parameters used in this function.
* @return List of Expression defining the parameters
*/
public List<Expression> getParameters() {
return parameters;
}
public void acceptVisitor(LanguageObjectVisitor visitor) {
visitor.visit(this);
}
/**
* Set name of the function
* @param name Function name
*/
public void setName(String name) {
this.name = name;
}
public Class<?> getType() {
return this.type;
}
public void setType(Class<?> type) {
this.type = type;
}
}