com.baasbox.service.query.PartsParser.java Source code

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Here is the source code for com.baasbox.service.query.PartsParser.java

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/*
 * Copyright (c) 2014.
 *
 * BaasBox - info-at-baasbox.com
 *
 * 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.baasbox.service.query;

import java.util.Collections;
import java.util.List;

import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.node.ObjectNode;

import play.libs.Json;

import com.baasbox.service.query.PartsLexer.ArrayField;
import com.baasbox.service.query.PartsLexer.Part;

public class PartsParser {

    final String OBJ_PATRN = "\"%s\": %s";
    final String LST_PATRN = "\"%s\": {%s}";

    List<Part> parts;

    public PartsParser(List<Part> queryParts) {
        if (queryParts == null || queryParts.isEmpty()) {
            throw new RuntimeException("You can't initialize the parser with an empty parts array");
        }
        this.parts = queryParts;
    }

    public Part first() {
        return this.parts.get(0);
    }

    public Part lastParent() {
        if (this.parts.size() > 1) {
            return this.parts.get(this.parts.size() - 2);
        } else {
            return first();
        }
    }

    public JsonNode json(JsonNode bodyJson) {
        Collections.reverse(this.parts);
        ObjectNode on = Json.newObject();
        Part last = null;
        for (Part p : parts) {
            if (last == null) {
                on.put(p.getName(), bodyJson);
                last = p;
            } else {
                ObjectNode cont = Json.newObject();
                cont.put(p.getName(), on);
                on = cont;
            }

        }

        return on;

    }

    public String treeFields() {
        StringBuffer sb = new StringBuffer();
        for (int i = 0; i < this.parts.size(); i++) {
            Part p = this.parts.get(i);
            if (i > 0) {
                sb.append(".");
            }
            sb.append(p.getName());

        }
        return sb.toString();

    }

    public String fullTreeFields() {
        StringBuffer sb = new StringBuffer();
        for (int i = 0; i < this.parts.size(); i++) {
            Part p = this.parts.get(i);
            if (i > 0) {
                sb.append(".");
            }
            sb.append(p.getName());
            if (p instanceof ArrayField) {
                ArrayField af = (ArrayField) p;
                sb.append("[").append(af.arrayIndex).append("]");
            }

        }
        return sb.toString();

    }

    public boolean isMultiField() {
        return this.parts.size() > 1;
    }

    public Part last() {
        return this.parts.get(this.parts.size() - 1);
    }

    public List<Part> parts() {
        return this.parts;
    }

    public boolean isArray() {
        return last() instanceof ArrayField;
    }

}