com.chadekin.jadys.commons.expression.impl.LogicalExpressionBuilder.java Source code

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Here is the source code for com.chadekin.jadys.commons.expression.impl.LogicalExpressionBuilder.java

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/**
 *                     GNU General Public License (GPL)
 *                        version 3.0, 29 June 2007
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public
 * License along with this program.  If not, see
 * <http://www.gnu.org/licenses/gpl-3.0.html>.
 *
 * Copyright (C) 2017 Marc Mamiah.
 * License GPLv3+: GNU GPL version 3
 */
package com.chadekin.jadys.commons.expression.impl;

import com.chadekin.jadys.commons.enums.ConditionType;
import com.chadekin.jadys.commons.JadysBuilder;
import com.chadekin.jadys.commons.Operator;
import com.chadekin.jadys.commons.expression.SqlExpressionBuilder;
import com.chadekin.jadys.commons.resourcekeys.JadysKeys;
import org.apache.commons.lang.StringUtils;

/**
 * LogicalExpressionBuilder
 */
public class LogicalExpressionBuilder implements SqlExpressionBuilder {

    private Object value;
    private Operator operator;

    @Override
    public ConditionType getOperatorType() {
        return ConditionType.LOGICAL;
    }

    @Override
    public JadysBuilder<String> init(Operator operator, Object value) {
        this.operator = operator;
        this.value = value;
        return this;
    }

    @Override
    public String build() {
        if (value == null || StringUtils.isBlank(value.toString())) {
            return StringUtils.EMPTY;
        }
        StringBuilder result = new StringBuilder(JadysKeys.SPACE).append(operator.getOperator())
                .append(JadysKeys.SPACE).append(JadysKeys.OPEN_PARENTHESIS).append(value)
                .append(JadysKeys.CLOSE_PARENTHESIS);
        return result.toString();
    }
}