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Core services for Usergrid system.

There is a newer version: 0.0.27.1

/*******************************************************************************
 * Copyright 2012 Apigee Corporation
 * 
 * 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.usergrid.persistence.query.tree;

import static org.apache.commons.lang.StringUtils.removeEnd;

import org.antlr.runtime.ClassicToken;
import org.antlr.runtime.Token;

/**
 * @author tnine
 * 
 */
public class StringLiteral extends Literal {

    private String value;
    private String finishValue;

    /**
     * @param t
     */
    public StringLiteral(Token t) {
        super(t);
        String newValue = t.getText();
        newValue = newValue.substring(1, newValue.length() - 1);

        parseValue(newValue);
    }

    public StringLiteral(String value) {
        super(new ClassicToken(0, value));
        parseValue(value);

    }

    /**
     * Parse the value and set the optional end value
     * 
     * @param value
     */
    private void parseValue(String value) {

        this.value = value.trim().toLowerCase();

        if ("*".equals(value)) {
            this.value = null;
            this.finishValue = null;
            return;
        }

        if (value != null && value.endsWith("*")) {
            this.value = removeEnd(value.toString(), "*");

            finishValue = this.value + "\uFFFF";

        }
        // set the end value to the same as the start value
        else {
            finishValue = value;
        }

    }

    /**
     * If this were a string literal
     * 
     * @return
     */
    public String getEndValue() {
        return this.finishValue;
    }

    public String getValue() {
        return this.value;
    }

}