<commit_before>/*
 * Copyright 2012-2019 MarkLogic 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 com.marklogic.hub.impl;

import com.marklogic.appdeployer.AppConfig;
import com.marklogic.client.DatabaseClient;
import com.marklogic.client.eval.EvalResultIterator;
import com.marklogic.client.eval.ServerEvaluationCall;
import com.marklogic.client.extensions.ResourceManager;
import com.marklogic.client.extensions.ResourceServices;
import com.marklogic.client.io.StringHandle;
import com.marklogic.client.util.RequestParameters;
import com.marklogic.hub.HubConfig;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

@Component
public class Versions extends ResourceManager {
    private static final String NAME = "ml:hubversion";

    DatabaseClient stagingClient;
    private AppConfig appConfig;

    @Autowired
    private HubConfig hubConfig;

    public Versions() {
        super();
    }

    /**
     * Needed for the Gradle tasks.
     *
     * @param hubConfig HubConfig
     */
    public Versions(HubConfig hubConfig) {
        this.hubConfig = hubConfig;
        this.appConfig = hubConfig.getAppConfig();
    }

    /**
     * Needed for the Gradle tasks.
     *
     * @param appConfig AppConfig
     */
    public Versions(AppConfig appConfig) {
        this.appConfig = appConfig;
    }

    public void setupClient() {
        this.stagingClient = hubConfig.newStagingClient();
        this.stagingClient.init(NAME, this);
    }

    public String getDHFVersion() {
        return hubConfig.getDHFVersion();
    }

    public String getHubVersion() {
        try {
            ResourceServices.ServiceResultIterator resultItr = this.getServices().get(new RequestParameters());
            if (resultItr == null || ! resultItr.hasNext()) {
                return null;
            }<commit_msg>DHFPROD-2229: Fix NullPointer via DataHubTest<commit_after>/*
 * Copyright 2012-2019 MarkLogic 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 com.marklogic.hub.impl;

import com.marklogic.appdeployer.AppConfig;
import com.marklogic.client.DatabaseClient;
import com.marklogic.client.eval.EvalResultIterator;
import com.marklogic.client.eval.ServerEvaluationCall;
import com.marklogic.client.extensions.ResourceManager;
import com.marklogic.client.extensions.ResourceServices;
import com.marklogic.client.io.StringHandle;
import com.marklogic.client.util.RequestParameters;
import com.marklogic.hub.HubConfig;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

@Component
public class Versions extends ResourceManager {
    private static final String NAME = "ml:hubversion";

    DatabaseClient stagingClient;
    private AppConfig appConfig;

    @Autowired
    private HubConfig hubConfig;

    public Versions() {
        super();
    }

    /**
     * Needed for the Gradle tasks.
     *
     * @param hubConfig HubConfig
     */
    public Versions(HubConfig hubConfig) {
        this.hubConfig = hubConfig;
        this.appConfig = hubConfig.getAppConfig();
    }

    /**
     * Needed for the Gradle tasks.
     *
     * @param appConfig AppConfig
     */
    public Versions(AppConfig appConfig) {
        this.appConfig = appConfig;
    }

    public void setupClient() {
        this.stagingClient = hubConfig.newStagingClient();
        this.stagingClient.init(NAME, this);
    }

    public String getDHFVersion() {
        return (hubConfig != null) ? hubConfig.getDHFVersion() : null;
    }

    public String getHubVersion() {
        try {
            ResourceServices.ServiceResultIterator resultItr = this.getServices().get(new RequestParameters());
            if (resultItr == null || ! resultItr.hasNext()) {
                return null;
            }
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