| /* |
| * 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.cocoon.forms.binding; |
| |
| import org.apache.cocoon.forms.util.DomHelper; |
| |
| import org.w3c.dom.Element; |
| |
| /** |
| * RepeaterJXPathBindingBuilder provides a helper class for the Factory |
| * implemented in {@link JXPathBindingManager} that helps construct the |
| * actual {@link RepeaterJXPathBinding} out of the configuration in the |
| * provided configElement which looks like: |
| * <pre><code> |
| * <fb:repeater |
| * id="contacts" |
| * parent-path="contacts" |
| * row-path="contact" |
| * row-path-insert="new-contact" > |
| * |
| * <fb:identity> |
| * <!-- nested bindings that map the 'identity' of the items --> |
| * </fb:identity> |
| * |
| * <fb:on-bind> |
| * <!-- nested bindings executed on updates AND right after the insert --> |
| * </fb:on-bind> |
| * |
| * <fb:on-delete-row> |
| * <!-- nested bindings executed on deletion of row --> |
| * </fb:on-delete-row> |
| * |
| * <fb:on-insert-row> |
| * <!-- nested bindings executed to prepare the insertion of a row --> |
| * </fb:on-insert-row> |
| * |
| * </fb:repeater> |
| * </code></pre> |
| * |
| * @version $Id$ |
| */ |
| public class RepeaterJXPathBindingBuilder extends JXPathBindingBuilderBase { |
| |
| /** |
| * Creates an instance of {@link RepeaterJXPathBinding} according to the |
| * attributes and nested comfiguration elements of the bindingElm. |
| * |
| * @param bindingElm |
| * @param assistant |
| * @return JXPathBindingBase |
| */ |
| public JXPathBindingBase buildBinding(Element bindingElm, |
| JXPathBindingManager.Assistant assistant) |
| throws BindingException { |
| if (bindingElm.hasAttribute("unique-row-id")) { |
| throw new BindingException("Attribute 'unique-row-id' is no more supported, use <fb:identity> instead", |
| DomHelper.getLocationObject(bindingElm)); |
| } |
| |
| if (bindingElm.hasAttribute("unique-path")) { |
| throw new BindingException("Attribute 'unique-path' is no more supported, use <fb:identity> instead", |
| DomHelper.getLocationObject(bindingElm)); |
| } |
| |
| try { |
| CommonAttributes commonAtts = |
| JXPathBindingBuilderBase.getCommonAttributes(bindingElm); |
| |
| String repeaterId = |
| DomHelper.getAttribute(bindingElm, "id", null); |
| String parentPath = |
| DomHelper.getAttribute(bindingElm, "parent-path", null); |
| String rowPath = |
| DomHelper.getAttribute(bindingElm, "row-path", null); |
| String rowPathForInsert = |
| DomHelper.getAttribute(bindingElm, "row-path-insert", rowPath); |
| String adapterClass = |
| DomHelper.getAttribute(bindingElm, "adapter-class", null); |
| |
| // do inheritance |
| RepeaterJXPathBinding otherBinding = (RepeaterJXPathBinding)assistant.getContext().getSuperBinding(); |
| JXPathBindingBase[] existingOnBind = null; |
| JXPathBindingBase[] existingOnDelete = null; |
| JXPathBindingBase[] existingOnInsert = null; |
| JXPathBindingBase[] existingIdentity = null; |
| |
| if (otherBinding != null) { |
| commonAtts = JXPathBindingBuilderBase.mergeCommonAttributes(otherBinding.getCommonAtts(), commonAtts); |
| |
| if (repeaterId == null) |
| repeaterId = otherBinding.getId(); |
| if (parentPath == null) |
| parentPath = otherBinding.getRepeaterPath(); |
| if (rowPath == null) |
| rowPath = otherBinding.getRowPath(); |
| if (rowPathForInsert == null) |
| rowPathForInsert = otherBinding.getInsertRowPath(); |
| |
| if (otherBinding.getRowBinding() != null) |
| existingOnBind = otherBinding.getRowBinding().getChildBindings(); |
| if (otherBinding.getDeleteRowBinding() != null) |
| existingOnDelete = otherBinding.getDeleteRowBinding().getChildBindings(); |
| if (otherBinding.getIdentityBinding() != null) |
| existingIdentity = otherBinding.getIdentityBinding().getChildBindings(); |
| if (otherBinding.getInsertRowBinding() != null) |
| existingOnInsert = new JXPathBindingBase[]{otherBinding.getInsertRowBinding()}; |
| } |
| |
| // Simple mode will be used if no fb:identity, fb:on-bind, fb:on-delete-row, |
| // or fb:on-insert-row exists in this or inherited binding definitions. |
| // In that case, the children of fb:repeater will be used as child bindings. |
| boolean simpleMode = true; |
| |
| Element childWrapElement = |
| DomHelper.getChildElement(bindingElm, BindingManager.NAMESPACE, "on-bind"); |
| JXPathBindingBase[] childBindings = |
| assistant.makeChildBindings(childWrapElement, existingOnBind); |
| if (childWrapElement != null) { |
| // Not checking existingOnBind!=null here because parent can be in 'simpleMode'. |
| simpleMode = false; |
| } |
| |
| JXPathBindingBase[] deleteBindings = null; |
| Element deleteWrapElement = |
| DomHelper.getChildElement(bindingElm, BindingManager.NAMESPACE, "on-delete-row"); |
| if (deleteWrapElement != null || existingOnDelete != null) { |
| deleteBindings = |
| assistant.makeChildBindings(deleteWrapElement,existingOnDelete); |
| simpleMode = false; |
| } |
| |
| JXPathBindingBase insertBinding = null; |
| Element insertWrapElement = |
| DomHelper.getChildElement(bindingElm, BindingManager.NAMESPACE, "on-insert-row"); |
| if (insertWrapElement != null || existingOnInsert != null) { |
| insertBinding = |
| assistant.makeChildBindings(insertWrapElement, existingOnInsert)[0]; |
| simpleMode = false; |
| } |
| |
| JXPathBindingBase[] identityBinding = null; |
| Element identityWrapElement = |
| DomHelper.getChildElement(bindingElm, BindingManager.NAMESPACE, "identity"); |
| if (identityWrapElement != null || existingIdentity != null) { |
| // TODO: we can only handle ValueJXPathBinding at the moment: |
| // http://marc.theaimsgroup.com/?l=xml-cocoon-dev&m=107906438632484&w=4 |
| identityBinding = |
| assistant.makeChildBindings(identityWrapElement, existingIdentity); |
| for (int i = 0; i < identityBinding.length;i++) { |
| if (!(identityBinding[i] instanceof ValueJXPathBinding)) { |
| throw new BindingException("Error building repeater binding defined at " + |
| DomHelper.getLocation(bindingElm) + ": Only value binding (i.e. fb:value) " + |
| "can be used inside fb:identity at the moment. You can read " + |
| "http://marc.theaimsgroup.com/?l=xml-cocoon-dev&m=107906438632484&w=4" + |
| " if you want to know more on this."); |
| } |
| } |
| simpleMode = false; |
| } |
| |
| if (simpleMode) { |
| // Use the children of the current element |
| childBindings = assistant.makeChildBindings(bindingElm, existingOnBind); |
| } |
| |
| return new EnhancedRepeaterJXPathBinding(commonAtts, repeaterId, parentPath, |
| rowPath, rowPathForInsert, |
| childBindings, insertBinding, deleteBindings, identityBinding, adapterClass); |
| } catch (BindingException e) { |
| throw e; |
| } catch (Exception e) { |
| throw new BindingException("Error building repeater binding", e, |
| DomHelper.getLocationObject(bindingElm)); |
| } |
| } |
| } |
