org.teiid.language.Literal Maven / Gradle / Ivy
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* Copyright Red Hat, Inc. and/or its affiliates
* and other contributors as indicated by the @author tags and
* the COPYRIGHT.txt file distributed with this work.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.teiid.language;
import org.teiid.language.visitor.LanguageObjectVisitor;
/**
* Represents a literal value that is used in
* an expression. The value can be obtained and should match
* the type specified by {@link #getType()}
*/
public class Literal extends BaseLanguageObject implements Expression {
private Object value;
private Class type;
private boolean isBindEligible;
public Literal(Object value, Class type) {
this.value = value;
this.type = type;
}
public Object getValue() {
return this.value;
}
public void acceptVisitor(LanguageObjectVisitor visitor) {
visitor.visit(this);
}
public Class getType() {
return this.type;
}
public void setValue(Object value) {
this.value = value;
}
public void setType(Class type) {
this.type = type;
}
/**
* Set by the optimizer if the literal was created by the evaluation of another expression.
* Setting to true will not always result in the value being handled as a bind value.
* @return
*/
public boolean isBindEligible() {
return isBindEligible;
}
public void setBindEligible(boolean isBindEligible) {
this.isBindEligible = isBindEligible;
}
}