com.redhat.red.build.koji.model.json.util.MavenGAVDeserializer.java Source code

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Here is the source code for com.redhat.red.build.koji.model.json.util.MavenGAVDeserializer.java

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/**
 * Copyright (C) 2015 Red Hat, Inc. (jcasey@redhat.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.redhat.red.build.koji.model.json.util;

import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.core.JsonToken;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.deser.std.StdDeserializer;
import org.commonjava.maven.atlas.ident.ref.ProjectVersionRef;
import org.commonjava.maven.atlas.ident.ref.SimpleProjectVersionRef;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.IOException;

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

/**
 * Created by jdcasey on 2/10/16.
 */
public class MavenGAVDeserializer extends StdDeserializer<SimpleProjectVersionRef> {
    public MavenGAVDeserializer(Class<? extends ProjectVersionRef> cls) {
        super(cls);
    }

    @Override
    public SimpleProjectVersionRef deserialize(JsonParser jp, DeserializationContext ctxt)
            throws IOException, JsonProcessingException {
        String g = null;
        String a = null;
        String v = null;

        JsonToken token = null;
        while ((token = jp.nextToken()) != JsonToken.END_OBJECT) {
            if (token == JsonToken.VALUE_STRING) {
                String field = jp.getCurrentName();
                switch (field) {
                case ("group_id"): {
                    g = jp.getText();
                    break;
                }
                case ("artifact_id"): {
                    a = jp.getText();
                    break;
                }
                case ("version"): {
                    v = jp.getText();
                    break;
                }
                default: {
                    Logger logger = LoggerFactory.getLogger(getClass());
                    logger.debug("Ignoring unknown field: {}", field);
                }
                }
            }
        }

        if (isEmpty(g) || isEmpty(a) || isEmpty(v)) {
            throw new KojiJsonException("Invalid GAV: " + g + ":" + a + ":" + v);
        }

        return new SimpleProjectVersionRef(g, a, v);
    }
}