/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.isis.viewer.scimpi.dispatcher.edit;
import java.io.IOException;
import java.util.List;
import org.apache.isis.core.commons.authentication.AnonymousSession;
import org.apache.isis.core.commons.authentication.AuthenticationSession;
import org.apache.isis.core.commons.debug.DebugBuilder;
import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
import org.apache.isis.core.metamodel.adapter.version.Version;
import org.apache.isis.core.metamodel.consent.Consent;
import org.apache.isis.core.metamodel.consent.Veto;
import org.apache.isis.core.metamodel.facets.object.parseable.ParseableFacet;
import org.apache.isis.core.metamodel.facets.object.parseable.TextEntryParseException;
import org.apache.isis.core.metamodel.spec.ObjectSpecification;
import org.apache.isis.core.metamodel.spec.feature.ObjectAssociation;
import org.apache.isis.core.metamodel.spec.feature.ObjectAssociationFilters;
import org.apache.isis.core.metamodel.spec.feature.OneToOneAssociation;
import org.apache.isis.runtimes.dflt.runtime.system.context.IsisContext;
import org.apache.isis.runtimes.dflt.runtime.system.transaction.MessageBroker;
import org.apache.isis.viewer.scimpi.dispatcher.Action;
import org.apache.isis.viewer.scimpi.dispatcher.Dispatcher;
import org.apache.isis.viewer.scimpi.dispatcher.NotLoggedInException;
import org.apache.isis.viewer.scimpi.dispatcher.context.RequestContext;
import org.apache.isis.viewer.scimpi.dispatcher.context.RequestContext.Scope;
public class EditAction implements Action {
public static final String ACTION = "edit";
@Override
public String getName() {
return ACTION;
}
@Override
public void process(final RequestContext context) throws IOException {
AuthenticationSession session = context.getSession();
if (session == null) {
session = new AnonymousSession();
}
try {
final String objectId = context.getParameter("_" + OBJECT);
final String version = context.getParameter("_" + VERSION);
final String formId = context.getParameter("_" + FORM_ID);
String resultName = context.getParameter("_" + RESULT_NAME);
resultName = resultName == null ? RequestContext.RESULT : resultName;
final String override = context.getParameter("_" + RESULT_OVERRIDE);
String message = context.getParameter("_" + MESSAGE);
final ObjectAdapter adapter = context.getMappedObject(objectId);
final List<ObjectAssociation> fields = adapter.getSpecification().getAssociations(ObjectAssociationFilters.dynamicallyVisible(session, adapter));
for (final ObjectAssociation objectAssociation : fields) {
if (objectAssociation.isVisible(session, adapter).isVetoed()) {
throw new NotLoggedInException();
}
}
final FormState entryState = validateObject(context, adapter, fields);
final Version adapterVersion = adapter.getVersion();
final Version formVersion = context.getVersion(version);
if (formVersion != null && adapterVersion.different(formVersion)) {
IsisContext.getMessageBroker().addMessage("The " + adapter.getSpecification().getSingularName() + " was edited " + "by another user (" + adapterVersion.getUser() + "). Please make your changes based on their changes.");
final String view = context.getParameter("_" + ERROR);
context.setRequestPath(view, Dispatcher.EDIT);
entryState.setForm(formId);
context.addVariable(ENTRY_FIELDS, entryState, Scope.REQUEST);
context.addVariable(resultName, objectId, Scope.REQUEST);
if (override != null) {
context.addVariable(resultName, override, Scope.REQUEST);
}
} else if (entryState.isValid()) {
changeObject(context, adapter, entryState, fields);
if (adapter.isTransient()) {
IsisContext.getPersistenceSession().makePersistent(adapter);
context.unmapObject(adapter, Scope.REQUEST);
}
String view = context.getParameter("_" + VIEW);
final String id = context.mapObject(adapter, Scope.REQUEST);
context.addVariable(resultName, id, Scope.REQUEST);
if (override != null) {
context.addVariable(resultName, override, Scope.REQUEST);
}
final int questionMark = view == null ? -1 : view.indexOf("?");
if (questionMark > -1) {
final String params = view.substring(questionMark + 1);
final int equals = params.indexOf("=");
context.addVariable(params.substring(0, equals), params.substring(equals + 1), Scope.REQUEST);
view = view.substring(0, questionMark);
}
context.setRequestPath(view);
if (message == null) {
message = "Saved changes to " + adapter.getSpecification().getSingularName();
} else if (message.equals("")) {
message = null;
}
if (message != null) {
final MessageBroker messageBroker = IsisContext.getMessageBroker();
messageBroker.addMessage(message);
}
} else {
final String view = context.getParameter("_" + ERROR);
context.setRequestPath(view, Dispatcher.EDIT);
entryState.setForm(formId);
context.addVariable(ENTRY_FIELDS, entryState, Scope.REQUEST);
context.addVariable(resultName, objectId, Scope.REQUEST);
if (override != null) {
context.addVariable(resultName, override, Scope.REQUEST);
}
final MessageBroker messageBroker = IsisContext.getMessageBroker();
messageBroker.addWarning(entryState.getError());
}
} catch (final RuntimeException e) {
IsisContext.getMessageBroker().getMessages();
IsisContext.getMessageBroker().getWarnings();
IsisContext.getUpdateNotifier().clear();
IsisContext.getUpdateNotifier().clear();
throw e;
}
}
private FormState validateObject(final RequestContext context, final ObjectAdapter object, final List<ObjectAssociation> fields) {
final FormState formState = new FormState();
for (int i = 0; i < fields.size(); i++) {
final ObjectAssociation field = fields.get(i);
final String fieldId = field.getId();
String newEntry = context.getParameter(fieldId);
if (fields.get(i).isOneToManyAssociation()) {
continue;
}
if (fields.get(i).isVisible(IsisContext.getAuthenticationSession(), object).isVetoed()) {
continue;
}
if (field.isUsable(IsisContext.getAuthenticationSession(), object).isVetoed()) {
continue;
}
if (newEntry != null && newEntry.equals("-OTHER-")) {
newEntry = context.getParameter(fieldId + "-other");
}
if (newEntry == null) {
// TODO duplicated in EditObject; line 97
final ObjectSpecification spec = field.getSpecification();
if (spec.isOfType(IsisContext.getSpecificationLoader().loadSpecification(boolean.class)) || spec.isOfType(IsisContext.getSpecificationLoader().loadSpecification(Boolean.class))) {
newEntry = FALSE;
} else {
continue;
}
}
final FieldEditState fieldState = formState.createField(fieldId, newEntry);
Consent consent = null;
if (field.isMandatory() && (newEntry.equals("") || newEntry.equals("NULL"))) {
consent = new Veto(field.getName() + " required");
formState.setError("Not all fields have been set");
} else if (field.getSpecification().containsFacet(ParseableFacet.class)) {
try {
final ParseableFacet facet = field.getSpecification().getFacet(ParseableFacet.class);
final ObjectAdapter originalValue = field.get(object);
final ObjectAdapter newValue = facet.parseTextEntry(originalValue, newEntry);
consent = ((OneToOneAssociation) field).isAssociationValid(object, newValue);
fieldState.setValue(newValue);
} catch (final TextEntryParseException e) {
consent = new Veto(e.getMessage());
// formState.setError("Not all fields have been entered correctly");
}
} else {
final ObjectAdapter associate = newEntry.equals("null") ? null : context.getMappedObject(newEntry);
if (associate != null) {
IsisContext.getPersistenceSession().resolveImmediately(associate);
}
consent = ((OneToOneAssociation) field).isAssociationValid(object, associate);
fieldState.setValue(associate);
}
if (consent.isVetoed()) {
fieldState.setError(consent.getReason());
formState.setError("Not all fields have been entered correctly");
}
}
// TODO check the state of the complete object.
return formState;
}
private void changeObject(final RequestContext context, final ObjectAdapter object, final FormState editState, final List<ObjectAssociation> fields) {
for (int i = 0; i < fields.size(); i++) {
final FieldEditState field = editState.getField(fields.get(i).getId());
if (field == null) {
continue;
}
final String newEntry = field.getEntry();
final ObjectAdapter originalValue = fields.get(i).get(object);
final boolean isVisible = fields.get(i).isVisible(IsisContext.getAuthenticationSession(), object).isAllowed();
final boolean isUsable = fields.get(i).isUsable(IsisContext.getAuthenticationSession(), object).isAllowed();
final boolean bothEmpty = originalValue == null && newEntry.equals("");
final boolean bothSame = newEntry.equals(originalValue == null ? "" : originalValue.titleString());
if ((!isVisible || !isUsable) || bothEmpty || bothSame) {
if (fields.get(i).getSpecification().getFacet(ParseableFacet.class) == null) {
// REVIEW restores object to loader
context.getMappedObject(newEntry);
}
continue;
}
if (fields.get(i).getSpecification().containsFacet(ParseableFacet.class)) {
final ParseableFacet facet = fields.get(i).getSpecification().getFacet(ParseableFacet.class);
final ObjectAdapter newValue = facet.parseTextEntry(originalValue, newEntry);
((OneToOneAssociation) fields.get(i)).set(object, newValue);
} else {
((OneToOneAssociation) fields.get(i)).set(object, field.getValue());
}
}
}
@Override
public void init() {
}
@Override
public void debug(final DebugBuilder debug) {
}
}