/*
 * Copyright (c) 2016 Couchbase, Inc.
 *
 * 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 com.couchbase.client.java.query.dsl.path;

import com.couchbase.client.java.query.dsl.element.Element;

/**
 * .
 *
 * @author Michael Nitschinger
 */
public abstract class AbstractPath implements Path {

    private Element element;
    private AbstractPath parent;

    protected AbstractPath(AbstractPath parent) {
        this.parent = parent;
    }

    private String render() {
        StringBuilder sb = new StringBuilder();
        if (parent != null) {
            sb.append(parent.render()).append(" ");
        }
        if (element != null) {
            sb.append(element.export());
        }
        return sb.toString();
    }

    protected void element(Element element) {
        this.element = element;
    }

    @Override
    public String toString() {
        return render().trim();
    }

}