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/* Copyright 2013 The jeo project. All rights reserved.
 *
 * 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 io.jeo.mongo;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

public class Path {

    /** serialVersionUID */
    private static final long serialVersionUID = 1L;

    List parts;
    String join;

    public Path() {
        this(new ArrayList());
    }

    public Path(String path) {
        this(Arrays.asList(path.split("\\.")));
    }

    public Path(List path) {
        parts = new ArrayList(path);
        
        StringBuilder sb = new StringBuilder();
        for (String str: parts) {
            sb.append(str).append(".");
        }
        if (sb.length() > 0) {
            sb.setLength(sb.length()-1);
        }
        join = sb.toString();
    }

    public List getParts() {
        return parts;
    }

    public Path prepend(String part) {
        Path p = new Path(parts);
        p.parts.add(0, part);
        return p;
    }

    public Path append(String part) {
        Path p = new Path(parts);
        p.parts.addAll(new Path(part).getParts());
        return p;
    }

    public String join() {
        return join;
    }

    @Override
    public String toString() {
        return join;
    }
}