[isidorus-cvs] r955 - branches/gdl-frontend/src/anaToMia/GDL_Widgets/src/us/isidor/gdl/anaToMia/Widgets/isidorus
lgiessmann at common-lisp.net
lgiessmann at common-lisp.net
Wed Sep 21 13:02:13 UTC 2011
Author: lgiessmann
Date: Wed Sep 21 06:02:11 2011
New Revision: 955
Log:
gdl-frontend: Widgets: finalised the implementation of the delete-operation of environment topics
Modified:
branches/gdl-frontend/src/anaToMia/GDL_Widgets/src/us/isidor/gdl/anaToMia/Widgets/isidorus/DeleteCallback.java
branches/gdl-frontend/src/anaToMia/GDL_Widgets/src/us/isidor/gdl/anaToMia/Widgets/isidorus/HashObjectPsiContainer.java
Modified: branches/gdl-frontend/src/anaToMia/GDL_Widgets/src/us/isidor/gdl/anaToMia/Widgets/isidorus/DeleteCallback.java
==============================================================================
--- branches/gdl-frontend/src/anaToMia/GDL_Widgets/src/us/isidor/gdl/anaToMia/Widgets/isidorus/DeleteCallback.java Wed Sep 21 04:20:42 2011 (r954)
+++ branches/gdl-frontend/src/anaToMia/GDL_Widgets/src/us/isidor/gdl/anaToMia/Widgets/isidorus/DeleteCallback.java Wed Sep 21 06:02:11 2011 (r955)
@@ -23,6 +23,7 @@
import us.isidor.gdl.anaToMia.TopicMaps.TopicMapsModel.TopicMapsTypes;
import us.isidor.gdl.anaToMia.Widgets.base.TmHelper;
import us.isidor.gdl.anaToMia.Widgets.base.Utils;
+import us.isidor.gdl.anaToMia.Widgets.environment.ExecutionException;
import us.isidor.gdl.anaToMia.Widgets.environment.IDeleteCallback;
import us.isidor.gdl.anaToMia.Widgets.environment.Pair;
@@ -38,7 +39,7 @@
"?topics model:environment env:";
private final String TM_SPARQL_QUERY_PART_2 = ".\n}";
private GdlWebPage gdlWebPage = null;
- private HashObjectPsiContainer hashObjectPsiContainer = new HashObjectPsiContainer();
+ private HashObjectPsiContainer hashObjectPsiContainer = null;
@SuppressWarnings("unused")
@@ -83,13 +84,23 @@
private void deleteEnvironmentTopic(Topic env){
String url = URL.encode(this.TM_SPARQL_URL);
RequestBuilder builder = new RequestBuilder(RequestBuilder.POST, url);
- try{
- DeleteCallback.this.gdlWebPage.createLoadScreenPanel("Wating for Data", "Requesting all PSIs of instances of " + IsidorusConstants.HASH_OBJECT_PSI + " that are associated with " + env.getSubjectIdentifiers().get(0).getReference() + " from " + url);
- builder.sendRequest(this.createTmSparqlQuery(env), new GetHashObjectPsisRequest());
- }catch(RequestException e){
- e.printStackTrace();
- Window.alert("could not request existing instances of " + IsidorusConstants.HASH_OBJECT_PSI + ", because(" + e.getClass() + "): " + e.getMessage());
+ if(env.getSubjectIdentifiers().length() == 0){
+ Window.alert("illegal environment topic detected, because: the topic " + env + " has no subject identifier");
DeleteCallback.this.gdlWebPage.resetPage();
+ } else {
+ try{
+ this.hashObjectPsiContainer = new HashObjectPsiContainer(env);
+ DeleteCallback.this.gdlWebPage.createLoadScreenPanel("Wating for Data", "Requesting all PSIs of instances of " + IsidorusConstants.HASH_OBJECT_PSI + " that are associated with " + env.getSubjectIdentifiers().get(0).getReference() + " from " + url);
+ builder.sendRequest(this.createTmSparqlQuery(env), new GetHashObjectPsisRequest());
+ }catch(RequestException e){
+ e.printStackTrace();
+ Window.alert("could not delete the topic " + TmHelper.getAnyIdOfTopic(env) + ", because(" + e.getClass() + "): " + e.getMessage());
+ DeleteCallback.this.gdlWebPage.resetPage();
+ } catch(ExecutionException e){
+ e.printStackTrace();
+ Window.alert("could not delete the topic " + TmHelper.getAnyIdOfTopic(env) + ", because(" + e.getClass() + "): " + e.getMessage());
+ DeleteCallback.this.gdlWebPage.resetPage();
+ }
}
}
Modified: branches/gdl-frontend/src/anaToMia/GDL_Widgets/src/us/isidor/gdl/anaToMia/Widgets/isidorus/HashObjectPsiContainer.java
==============================================================================
--- branches/gdl-frontend/src/anaToMia/GDL_Widgets/src/us/isidor/gdl/anaToMia/Widgets/isidorus/HashObjectPsiContainer.java Wed Sep 21 04:20:42 2011 (r954)
+++ branches/gdl-frontend/src/anaToMia/GDL_Widgets/src/us/isidor/gdl/anaToMia/Widgets/isidorus/HashObjectPsiContainer.java Wed Sep 21 06:02:11 2011 (r955)
@@ -1,11 +1,24 @@
package us.isidor.gdl.anaToMia.Widgets.isidorus;
-
import java.util.ArrayList;
-
+import us.isidor.gdl.anaToMia.TopicMaps.TopicMapsModel.Topic;
+import us.isidor.gdl.anaToMia.TopicMaps.TopicMapsModel.TopicMap;
+import us.isidor.gdl.anaToMia.Widgets.base.Utils;
+import us.isidor.gdl.anaToMia.Widgets.environment.ExecutionException;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
+import com.google.gwt.http.client.Request;
+import com.google.gwt.http.client.RequestBuilder;
+import com.google.gwt.http.client.RequestCallback;
+import com.google.gwt.http.client.RequestException;
+import com.google.gwt.http.client.Response;
+import com.google.gwt.http.client.URL;
+import com.google.gwt.json.client.JSONArray;
+import com.google.gwt.json.client.JSONObject;
+import com.google.gwt.json.client.JSONParser;
+import com.google.gwt.json.client.JSONString;
+import com.google.gwt.json.client.JSONValue;
import com.google.gwt.user.client.DOM;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.Button;
@@ -22,20 +35,24 @@
private Button commitButton = new Button("delete the Environment topic and all its Hash-Object topics");
private final String ERROR_STYLE_CLASS = "bad_input";
private CheckBoxClickHandler cbxClickHandler = new CheckBoxClickHandler();
+ private final String DELETE_URL = IsidorusConstants.DELETE_REQUEST_URL;
+ private Topic environmentTopic = null;
- public HashObjectPsiContainer(){
+ public HashObjectPsiContainer(Topic environmentTopic) throws ExecutionException {
+ if(environmentTopic == null) throw new ExecutionException("environmentTopic must not be null");
+ this.environmentTopic = environmentTopic;
this.initWidget(this.containerPanel);
this.containerPanel.add(this.commitButton);
- this.commitButton.addClickHandler(new HashObjectPsiContainerClickHandler());
+ this.commitButton.addClickHandler(new HashObjectPsiContainerClickHandler(this.environmentTopic));
DOM.setStyleAttribute(this.commitButton.getElement(), "width", "100%");
DOM.setStyleAttribute(this.commitButton.getElement(), "marginTop", "1em");
}
- public void addHashObjectPsi(String psi){
+ public void addHashObjectPsi(String psi) {
if(psi == null) return;
-
+
this.commitButton.removeFromParent();
CheckBox cbx = new CheckBox(psi);
this.psiCheckBoxes.add(cbx);
@@ -47,7 +64,7 @@
this.containerPanel.insert(cbx, widgetIdx);
break;
}
- }
+ }
cbx.addClickHandler(this.cbxClickHandler);
@@ -69,7 +86,12 @@
private class HashObjectPsiContainerClickHandler implements ClickHandler {
- public HashObjectPsiContainerClickHandler(){}
+ private Topic environmentTopic = null;
+
+
+ public HashObjectPsiContainerClickHandler(Topic environmentTopic){
+ this.environmentTopic = environmentTopic;
+ }
@Override
@@ -85,9 +107,131 @@
if(!allValuesChecked){
Window.alert("to delete the an environment topic, please select explicit all associated hash-object topics to be deleted!");
} else {
- // TODO: delete all hash-objects
- // TODO: delete the environment
+ DeleteAllHashObjectsRequest reqCallback = new DeleteAllHashObjectsRequest(HashObjectPsiContainer.this.psiCheckBoxes, this.environmentTopic);
+ for (CheckBox cbx : HashObjectPsiContainer.this.psiCheckBoxes) HashObjectPsiContainer.this.deleteHashObject(cbx.getText(), reqCallback);
}
}
}
+
+
+ private void deleteHashObject(String psi, DeleteAllHashObjectsRequest reqCallback){
+ if(psi != null || reqCallback != null){
+ JSONObject delObj = this.createObjectToBeDelete(psi);
+ try{
+ String url = URL.encode(this.DELETE_URL);
+ RequestBuilder builder = new RequestBuilder(RequestBuilder.DELETE, url);
+ builder.setHeader("Content-type", "application/json");
+
+ builder.sendRequest(delObj.toString(), reqCallback);
+ }catch(RequestException e){
+ Window.alert("could not delete the topic: " + psi + ", because(" + e.getClass() + "): " + e.getMessage());
+ }
+ }
+ }
+
+
+ private JSONObject createObjectToBeDelete(String psi){
+ JSONArray psis = new JSONArray();
+ psis.set(0, new JSONString(psi));
+
+ JSONObject delObj = new JSONObject();
+ delObj.put("type", new JSONString("Topic"));
+
+ String[] pref = Utils.splitUriByLastFragment(psi);
+ JSONValue val = JSONParser.parseStrict("{\"version\":\"1.1\",\"prefixes\":{\"pref\":" + pref[0] + "},\"subject_identifiers\":[\"[pref:" + pref[1] + "]\"]}");
+ delObj.put("delete", val.isObject());
+
+ return delObj;
+ }
+
+
+ private class DeleteAllHashObjectsRequest implements RequestCallback {
+ private ArrayList<String> hashObjectsToDelete = new ArrayList<String>();
+ private int objectsDeleted = 0;
+ private Topic environmentTopic = null;
+ private String environmentPsi = null;
+
+
+ @SuppressWarnings("unused")
+ private DeleteAllHashObjectsRequest(){}
+
+
+ public DeleteAllHashObjectsRequest(ArrayList<CheckBox> hashObjectToDelete, Topic environmentTopic){
+ if(hashObjectToDelete != null) for (CheckBox cbx : hashObjectToDelete) this.hashObjectsToDelete.add(cbx.getText());
+ this.environmentTopic = environmentTopic;
+ this.environmentPsi = this.environmentTopic.getSubjectIdentifiers().get(0).getReference(); // it's ensured that the passed topic has at least one psi before
+ }
+
+
+ @Override
+ public void onResponseReceived(Request request, Response response) {
+ if (200 == response.getStatusCode()) {
+ ++this.objectsDeleted;
+ if(this.objectsDeleted == this.hashObjectsToDelete.size()){
+ TopicMap tm = environmentTopic.getTopicMap();
+ for (String psi : this.hashObjectsToDelete) {
+ Topic top = tm.getTopicBySubjectIdentifier(tm.createLocator(psi));
+ top.remove();
+ }
+
+ JSONObject delObj = HashObjectPsiContainer.this.createObjectToBeDelete(this.environmentPsi);
+ String url = URL.encode(HashObjectPsiContainer.this.DELETE_URL);
+ RequestBuilder builder = new RequestBuilder(RequestBuilder.DELETE, url);
+ builder.setHeader("Content-type", "application/json");
+ try{
+ builder.sendRequest(delObj.toString(), new EnvironemntDeleteRequest(delObj, this.environmentTopic));
+ }catch(RequestException e){
+ Window.alert("delete operation of the object " + delObj + " failed, because: (" + e.getClass() + ")\n" + e.getMessage());
+ }
+ }
+ } else {
+ Window.alert("could not delete all topics of " + Utils.arrayToString(this.hashObjectsToDelete) + ", because(" + response.getStatusCode() + "): " + response.getStatusText());
+ }
+ }
+
+
+ @Override
+ public void onError(Request request, Throwable exception) {
+ String message = null;
+ Class<? extends Throwable> eClass = null;
+ if(exception != null){
+ message = exception.getMessage();
+ eClass = exception.getClass();
+ }
+ Window.alert("could not delete all topics of " + Utils.arrayToString(this.hashObjectsToDelete) + ", because(" + eClass + "): " + message);
+ }
+ }
+
+
+ private class EnvironemntDeleteRequest implements RequestCallback {
+ private JSONObject objectToBeSend = null;
+ private Topic topicToBeDeleted = null;
+
+
+ @SuppressWarnings("unused")
+ private EnvironemntDeleteRequest(){}
+
+
+ public EnvironemntDeleteRequest(JSONObject objectToBeDeleted, Topic topicToBeDeleted){
+ this.objectToBeSend = objectToBeDeleted;
+ this.topicToBeDeleted = topicToBeDeleted;
+ }
+
+
+ @Override
+ public void onResponseReceived(Request request, Response response) {
+ if (200 == response.getStatusCode()) {
+ Window.Location.reload();
+ this.topicToBeDeleted.remove();
+ } else {
+ Window.alert("delete operation of the object " + this.objectToBeSend + " failed: " + response.getStatusCode() + "(" + response.getStatusText() + ")\n" + response.getText());
+ }
+ }
+
+
+ @Override
+ public void onError(Request request, Throwable exception) {
+ Window.alert("could not delete the data: " + this.objectToBeSend);
+ }
+ }
}
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