List of usage examples for org.apache.commons.jxpath Pointer clone
Object clone();
From source file:org.apache.cocoon.forms.binding.RepeaterJXPathBinding.java
/** * Uses the mapped identity of each row to detect if rows have been * updated, inserted or removed. Depending on what happened the appropriate * child-bindings are allowed to visit the narrowed contexts. *///from w ww . j a v a2s . c o m public void doSave(Widget frmModel, JXPathContext jxpc) throws BindingException { // Find the repeater Repeater repeater = (Repeater) selectWidget(frmModel, this.repeaterId); // and his context, creating the path if needed JXPathContext repeaterContext = jxpc.getRelativeContext(jxpc.createPath(this.repeaterPath)); // create set of updatedRowIds Set updatedRows = new HashSet(); //create list of rows to insert at end List rowsToInsert = new ArrayList(); // iterate rows in the form model... int formRowCount = repeater.getSize(); for (int i = 0; i < formRowCount; i++) { Repeater.RepeaterRow thisRow = repeater.getRow(i); // Get the identity List identity = getIdentity(thisRow); if (hasNonNullElements(identity)) { // iterate nodes to find match Iterator rowPointers = repeaterContext.iteratePointers(this.rowPath); boolean found = false; while (rowPointers.hasNext()) { Pointer jxp = (Pointer) rowPointers.next(); JXPathContext rowContext = repeaterContext.getRelativeContext(jxp); List contextIdentity = getIdentity(rowContext); if (ListUtils.isEqualList(identity, contextIdentity)) { // match! --> bind to children this.rowBinding.saveFormToModel(thisRow, rowContext); // --> store rowIdValue in list of updatedRowIds updatedRows.add(identity); found = true; break; } } if (!found) { // this is a new row rowsToInsert.add(thisRow); // also add it to the updated row id's so that this row doesn't get deleted updatedRows.add(identity); } } else { // if there is no value to determine the identity --> this is a new row rowsToInsert.add(thisRow); } } // Iterate again nodes for deletion Iterator rowPointers = repeaterContext.iteratePointers(this.rowPath); List rowsToDelete = new ArrayList(); while (rowPointers.hasNext()) { Pointer jxp = (Pointer) rowPointers.next(); JXPathContext rowContext = repeaterContext.getRelativeContext((Pointer) jxp.clone()); List contextIdentity = getIdentity(rowContext); // check if the identity of the rowContext is in the updated rows // if not --> bind for delete if (!isIdentityInUpdatedRows(updatedRows, contextIdentity)) { rowsToDelete.add(rowContext); } } if (rowsToDelete.size() > 0) { // run backwards through the list, so that we don't get into // trouble by shifting indexes for (int i = rowsToDelete.size() - 1; i >= 0; i--) { if (this.deleteRowBinding != null) { this.deleteRowBinding.saveFormToModel(frmModel, rowsToDelete.get(i)); } else { // Simply remove the corresponding path ((JXPathContext) rowsToDelete.get(i)).removePath("."); } } } // count how many we have now int indexCount = 1; rowPointers = repeaterContext.iteratePointers(this.rowPathForInsert); while (rowPointers.hasNext()) { rowPointers.next(); indexCount++; } // end with rows to insert (to make sure they don't get deleted!) if (rowsToInsert.size() > 0) { Iterator rowIterator = rowsToInsert.iterator(); //register the factory! while (rowIterator.hasNext()) { Repeater.RepeaterRow thisRow = (Repeater.RepeaterRow) rowIterator.next(); // Perform the insert row binding. if (this.insertRowBinding != null) { this.insertRowBinding.saveFormToModel(repeater, repeaterContext); } // --> create the path to let the context be created Pointer newRowContextPointer = repeaterContext .createPath(this.rowPathForInsert + "[" + indexCount + "]"); JXPathContext newRowContext = repeaterContext.getRelativeContext(newRowContextPointer); if (getLogger().isDebugEnabled()) { getLogger().debug("inserted row at " + newRowContextPointer.asPath()); } // + rebind to children for update this.rowBinding.saveFormToModel(thisRow, newRowContext); getLogger().debug("bound new row"); indexCount++; } // } else { // if (getLogger().isWarnEnabled()) { // getLogger().warn("RepeaterBinding has detected rows to insert, but misses " // + "the <on-insert-row> binding to do it."); // } // } } if (getLogger().isDebugEnabled()) { getLogger().debug("done saving rows " + toString()); } }
From source file:org.apache.cocoon.woody.binding.RepeaterJXPathBinding.java
/** * Uses the mapped unique-id of each row to detect if rows have been * updated, inserted or removed. Depending on what happened the appropriate * child-bindings are alowed to visit the narrowed contexts. *//* w w w .ja va2 s . co m*/ public void doSave(Widget frmModel, JXPathContext jxpc) throws BindingException { // Find the repeater Repeater repeater = (Repeater) frmModel.getWidget(this.repeaterId); // and his context JXPathContext repeaterContext = jxpc.getRelativeContext(jxpc.getPointer(this.repeaterPath)); // create set of updatedRowIds Set updatedRowIds = new HashSet(); //create list of rows to insert at end List rowsToInsert = new ArrayList(); // iterate rows in the form model... int formRowCount = repeater.getSize(); for (int i = 0; i < formRowCount; i++) { Repeater.RepeaterRow thisRow = repeater.getRow(i); // Get the key values List rowIdValues = getUniqueRowValues(thisRow); if (isAnyListElementNotNull(rowIdValues)) { // iterate nodes to find match Iterator rowPointers = repeaterContext.iteratePointers(this.rowPath); boolean found = false; while (rowPointers.hasNext()) { Pointer jxp = (Pointer) rowPointers.next(); JXPathContext rowContext = repeaterContext.getRelativeContext(jxp); List matchIds = getMatchIds(rowContext); if (ListUtils.isEqualList(rowIdValues, matchIds)) { // match! --> bind to children this.rowBinding.saveFormToModel(thisRow, rowContext); // --> store rowIdValue in list of updatedRowIds updatedRowIds.add(rowIdValues); found = true; break; } } if (!found) { // this is a new row rowsToInsert.add(thisRow); // also add it to the updated row id's so that this row doesn't get deleted updatedRowIds.add(rowIdValues); } } else { // if all rowIdValues == null --> this is a new row rowsToInsert.add(thisRow); } } // Iterate again nodes for deletion Iterator rowPointers = repeaterContext.iteratePointers(this.rowPath); List rowsToDelete = new ArrayList(); while (rowPointers.hasNext()) { Pointer jxp = (Pointer) rowPointers.next(); JXPathContext rowContext = repeaterContext.getRelativeContext((Pointer) jxp.clone()); List matchIds = getMatchIds(rowContext); // check if matchPath was in list of updates, if not --> bind for delete if (!isListInSet(updatedRowIds, matchIds)) { rowsToDelete.add(rowContext); } } if (rowsToDelete.size() > 0) { if (this.deleteRowBinding != null) { // run backwards through the list, so that we don't get into // trouble by shifting indexes for (int i = rowsToDelete.size() - 1; i >= 0; i--) { this.deleteRowBinding.saveFormToModel(frmModel, rowsToDelete.get(i)); } } else { if (getLogger().isWarnEnabled()) { getLogger().warn("RepeaterBinding has detected rows to delete, " + "but misses the <on-delete-row> binding to do it."); } } } // count how many we have now int indexCount = 1; rowPointers = repeaterContext.iteratePointers(this.rowPathForInsert); while (rowPointers.hasNext()) { rowPointers.next(); indexCount++; } // end with rows to insert (to make sure they don't get deleted!) if (rowsToInsert.size() > 0) { if (this.insertRowBinding != null) { Iterator rowIterator = rowsToInsert.iterator(); //register the factory! while (rowIterator.hasNext()) { Repeater.RepeaterRow thisRow = (Repeater.RepeaterRow) rowIterator.next(); // Perform the insert row binding. this.insertRowBinding.saveFormToModel(repeater, repeaterContext); // --> create the path to let the context be created Pointer newRowContextPointer = repeaterContext .createPath(this.rowPathForInsert + "[" + indexCount + "]"); JXPathContext newRowContext = repeaterContext.getRelativeContext(newRowContextPointer); if (getLogger().isDebugEnabled()) { getLogger().debug("inserted row at " + newRowContextPointer.asPath()); } // + rebind to children for update this.rowBinding.saveFormToModel(thisRow, newRowContext); getLogger().debug("bound new row"); indexCount++; } } else { if (getLogger().isWarnEnabled()) { getLogger().warn("RepeaterBinding has detected rows to insert, but misses " + "the <on-insert-row> binding to do it."); } } } if (getLogger().isDebugEnabled()) { getLogger().debug("done saving rows " + toString()); } }