DBBitwiseEqualsOperator.java
- /*
- * Copyright 2014 Gregory Graham.
- *
- * 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 nz.co.gregs.dbvolution.operators;
- import nz.co.gregs.dbvolution.databases.definitions.DBDefinition;
- import nz.co.gregs.dbvolution.expressions.BooleanExpression;
- import nz.co.gregs.dbvolution.results.BooleanResult;
- import nz.co.gregs.dbvolution.expressions.DBExpression;
- import nz.co.gregs.dbvolution.expressions.NumberExpression;
- import nz.co.gregs.dbvolution.results.NumberResult;
- /**
- * Creates a bitwise comparison for boolean or number expressions
- *
- * <p style="color: #F90;">Support DBvolution at
- * <a href="http://patreon.com/dbvolution" target=new>Patreon</a></p>
- *
- * @author gregorygraham
- */
- public class DBBitwiseEqualsOperator extends DBEqualsOperator {
- private static final long serialVersionUID = 1L;
- /**
- * Creates a bitwise comparison for boolean or number expressions
- *
- * @param equalTo the boolean expression
- */
- public DBBitwiseEqualsOperator(BooleanExpression equalTo) {
- super(equalTo);
- }
- @Override
- public BooleanExpression generateWhereExpression(DBDefinition db, DBExpression column) {
- DBExpression genericExpression = column;
- BooleanExpression op = BooleanExpression.trueExpression();
- if (genericExpression instanceof BooleanExpression) {
- BooleanExpression expr = (BooleanExpression) genericExpression;
- final DBExpression firstValue = getFirstValue();
- if (firstValue instanceof BooleanResult) {
- op = expr.is((BooleanResult) firstValue);
- } else if (firstValue instanceof NumberResult) {
- op = expr.is(new NumberExpression((NumberResult) firstValue).is(1));
- }
- }
- return this.invertOperator ? op.not() : op;
- }
- }