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package net.oni2.aeinstaller.backend.network; |
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|
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import java.io.BufferedReader; |
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import java.io.IOException; |
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import java.io.InputStreamReader; |
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import java.io.UnsupportedEncodingException; |
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import java.util.ArrayList; |
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import java.util.HashMap; |
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import java.util.List; |
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|
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import net.oni2.aeinstaller.backend.depot.DepotConfig; |
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|
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import org.apache.http.HttpEntity; |
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import org.apache.http.HttpResponse; |
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import org.apache.http.NameValuePair; |
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import org.apache.http.client.entity.UrlEncodedFormEntity; |
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import org.apache.http.client.methods.HttpGet; |
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import org.apache.http.client.methods.HttpPost; |
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import org.apache.http.client.methods.HttpRequestBase; |
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import org.apache.http.impl.client.DefaultHttpClient; |
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import org.apache.http.message.BasicNameValuePair; |
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import org.apache.http.util.EntityUtils; |
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import org.json.JSONArray; |
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import org.json.JSONException; |
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import org.json.JSONObject; |
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|
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/** |
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* @author Christian Illy |
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*/ |
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public class DrupalJSONQuery { |
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|
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/** |
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* Execute an REST action through a HTTP POST query |
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* |
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* @param resource |
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* Resource to run on |
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* @param action |
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* Action to call |
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* @param postData |
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* Fieldname / value pairs to include in POST data |
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* @return JSON structure of item |
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* @throws Exception |
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* on HTTP error |
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*/ |
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public static JSONArray postAction(String resource, String action, |
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HashMap<String, String> postData) throws Exception { |
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try { |
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List<NameValuePair> nvps = new ArrayList<NameValuePair>(); |
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for (String key : postData.keySet()) { |
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nvps.add(new BasicNameValuePair(key, postData.get(key))); |
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} |
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HttpEntity data = new UrlEncodedFormEntity(nvps); |
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return executeQuery(DepotConfig.getDepotApiUrl() + resource + "/" + action |
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+ ".json", data); |
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} catch (UnsupportedEncodingException e) { |
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e.printStackTrace(); |
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} |
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return null; |
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} |
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|
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/** |
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* Execute an REST references query through a HTTP GET query |
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* |
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* @param resource |
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* Resource to run on |
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* @param index |
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* Index of item to get the references from |
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* @param refName |
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* Name of references type |
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* @return JSON structure of item |
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* @throws Exception |
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* on HTTP error |
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*/ |
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public static JSONArray getReferences(String resource, int index, |
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String refName) throws Exception { |
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return executeQuery( |
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DepotConfig.getDepotApiUrl() + resource + "/" + Integer.toString(index) + "/" |
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+ refName + ".json", null); |
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} |
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|
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/** |
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* Execute an REST item query through a HTTP GET query |
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* |
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* @param resource |
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* Resource to run on |
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* @param index |
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* Index of item to get |
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* @param parameters |
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* Parameters to pass (must start with ampersand "&") |
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* @return JSON structure of item |
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* @throws Exception |
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* on HTTP error |
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*/ |
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public static JSONArray getItem(String resource, int index, |
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String parameters) throws Exception { |
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return executeQuery( |
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DepotConfig.getDepotApiUrl() + resource + "/" + Integer.toString(index) |
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+ ".json" + parameters, null); |
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} |
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|
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/** |
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* Execute an REST index query through a HTTP GET query |
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* |
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* @param resource |
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* Resource to run on |
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* @param page |
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* Number of page to get (for limited results, e.g. nodes), -1 to |
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* ignore |
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* @param pagesize |
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* Maximum number of elements to return |
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* @return JSON structure of item |
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* @throws Exception |
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* on HTTP error |
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*/ |
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public static JSONArray getIndex(String resource, int page, int pagesize) |
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throws Exception { |
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String pageN = ""; |
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if (page >= 0) |
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pageN = "&page=" + Integer.toString(page); |
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String pagesizeN = ""; |
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if (pagesize >= 0) |
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pagesizeN = "&pagesize=" + Integer.toString(pagesize); |
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return executeQuery(DepotConfig.getDepotApiUrl() + resource + ".json" + pageN |
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+ pagesizeN, null); |
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} |
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|
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private static JSONArray executeQuery(String url, HttpEntity postData) |
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throws Exception { |
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BufferedReader input = null; |
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HttpRequestBase httpQuery = null; |
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|
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try { |
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DefaultHttpClient httpclient = new DefaultHttpClient(); |
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if (postData == null) { |
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httpQuery = new HttpGet(url); |
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} else { |
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httpQuery = new HttpPost(url); |
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((HttpPost) httpQuery).setEntity(postData); |
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} |
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|
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HttpResponse response = httpclient.execute(httpQuery); |
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|
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int code = response.getStatusLine().getStatusCode(); |
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if ((code > 299) || (code < 200)) { |
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throw new Exception(String.format( |
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"Error fetching content (HTTP status code %d).", code)); |
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} |
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|
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HttpEntity entity = response.getEntity(); |
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|
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input = new BufferedReader(new InputStreamReader( |
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entity.getContent())); |
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StringBuffer json = new StringBuffer(); |
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|
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char data[] = new char[1024]; |
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int dataRead; |
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while ((dataRead = input.read(data, 0, 1024)) != -1) { |
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json.append(data, 0, dataRead); |
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} |
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|
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EntityUtils.consume(entity); |
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|
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JSONArray jA = null; |
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if (json.charAt(0) == '{') { |
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jA = new JSONArray(); |
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jA.put(new JSONObject(json.toString())); |
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} else |
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jA = new JSONArray(json.toString()); |
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|
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return jA; |
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} catch (JSONException e) { |
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e.printStackTrace(); |
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} catch (UnsupportedEncodingException e) { |
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e.printStackTrace(); |
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} catch (IOException e) { |
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e.printStackTrace(); |
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} finally { |
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if (httpQuery != null) |
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httpQuery.releaseConnection(); |
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if (input != null) { |
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try { |
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input.close(); |
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} catch (IOException e) { |
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e.printStackTrace(); |
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} |
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} |
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} |
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return null; |
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} |
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} |
