net.ontopia.persistence.query.sql.SQLAnd.java Source code

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Here is the source code for net.ontopia.persistence.query.sql.SQLAnd.java

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/*
 * #!
 * Ontopia Engine
 * #-
 * Copyright (C) 2001 - 2013 The Ontopia Project
 * #-
 * 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 net.ontopia.persistence.query.sql;

import org.apache.commons.lang3.StringUtils;

/**
 * INTERNAL: SQL logical expression: and
 */

public class SQLAnd implements SQLExpressionIF {

    protected SQLExpressionIF[] expressions;

    public SQLAnd(SQLExpressionIF expr1, SQLExpressionIF expr2) {
        this.expressions = new SQLExpressionIF[] { expr1, expr2 };
    }

    public SQLAnd(SQLExpressionIF expr1, SQLExpressionIF expr2, SQLExpressionIF expr3) {
        this.expressions = new SQLExpressionIF[] { expr1, expr2, expr3 };
    }

    public SQLAnd(SQLExpressionIF[] expressions) {
        if (expressions == null)
            throw new NullPointerException("And expressions cannot be null.");
        this.expressions = expressions;
    }

    @Override
    public int getType() {
        return AND;
    }

    public SQLExpressionIF[] getExpressions() {
        return expressions;
    }

    public void setExpressions(SQLExpressionIF[] expressions) {
        this.expressions = expressions;
    }

    @Override
    public String toString() {
        return "(" + StringUtils.join(expressions, " and ") + ")";
    }

}