com.sun.webui.jsf.faces.DataProviderELResolver Maven / Gradle / Ivy
/*
* The contents of this file are subject to the terms
* of the Common Development and Distribution License
* (the License). You may not use this file except in
* compliance with the License.
*
* You can obtain a copy of the license at
* https://woodstock.dev.java.net/public/CDDLv1.0.html.
* See the License for the specific language governing
* permissions and limitations under the License.
*
* When distributing Covered Code, include this CDDL
* Header Notice in each file and include the License file
* at https://woodstock.dev.java.net/public/CDDLv1.0.html.
* If applicable, add the following below the CDDL Header,
* with the fields enclosed by brackets [] replaced by
* you own identifying information:
* "Portions Copyrighted [year] [name of copyright owner]"
*
* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
*/
package com.sun.webui.jsf.faces;
import com.sun.faces.annotation.Resolver;
import java.util.ArrayList;
import java.util.List;
import javax.el.ELResolver;
import javax.el.ELContext;
import javax.el.PropertyNotFoundException;
import javax.faces.model.SelectItem;
import com.sun.data.provider.DataProvider;
import com.sun.data.provider.FieldKey;
import com.sun.data.provider.RowKey;
import com.sun.data.provider.TableDataProvider;
import com.sun.data.provider.impl.TableRowDataProvider;
import com.sun.webui.jsf.model.Option;
import java.util.Iterator;
import java.beans.FeatureDescriptor;
import java.util.Arrays;
/**
* DataProviderPropertyResolver is a
* PropertyResolver implementation that, if the base
* parameter is a {@link DataProvider}, passes calls to getValue(),
* getType(), isReadOnly(), and setValue()
* to the corresponding {@link DataProvider} instance.
*
* These expressions are supported:
*
*
* #{...myDataProvider.value.FIELD_ID}
* #{...myDataProvider.value['FIELD_ID']}
* --> binds to the value of the {@link FieldKey} corresponding to 'FIELD_ID' in
* a DataProvider *or* the cursor row of a TableDataProvider. If the specified
* FIELD_ID does not correspond to a FieldKey in the DataProvider, this property
* resolver will throw a PropertyNotFoundException, and include any nested
* exceptions.
*
*
* #{...myDataProvider.value[':ROWKEY:']}
* --> binds to the 'cursorRow' {@link RowKey} of a TableDataProvider or the
* 'tableRow' RowKey of a TableRowDataProvider. If the DataProvider is not one
* of these, this binds to nothing. Note that cursor or tableRow can be
* *driven* by this binding. It is not read-only.
*
*
* #{...myDataProvider.value[':ROWID:']}
* --> binds to the 'cursorRow' {@link RowKey}'s ID (String) of a
* TableDataProvider or the 'tableRow' RowKey's ID of a TableRowDataProvider.
* If the DataProvider is not one of these, this binds to nothing. Note that
* cursor or tableRow can be *driven* by this binding. It is not read-only.
*
*
* #{...myDataProvider.selectItems.FIELD_ID}
* #{...myDataProvider.selectItems['FIELD_ID']}
* #{...myDataProvider.selectItems['VALUE_FIELD_ID,LABEL_FIELD_ID']}
* #{...myDataProvider.selectItems['VALUE_FIELD_ID,LABEL_FIELD_ID,DESC_FIELD_ID']}
* #{...myDataProvider.selectItems[':ROWKEY:,:ROWKEY:,:ROWKEY:']}
* #{...myDataProvider.selectItems[':ROWID:,:ROWID:,:ROWID:']}
* --> binds to an array of {@link SelectItem} generated by scanning the rows of
* the TableDataProvider (without moving the cursor). If the base object is a
* DataProvider, but not a TableDataProvider, the resulting SelectItem[] will
* have one element. Note that the special :ROWKEY: and :ROWID: field IDs can
* be used here.
*
*
* #{...myDataProvider.options.FIELD_ID}
* #{...myDataProvider.options['FIELD_ID']}
* #{...myDataProvider.options['VALUE_FIELD_ID,LABEL_FIELD_ID']}
* #{...myDataProvider.options['VALUE_FIELD_ID,LABEL_FIELD_ID,DESC_FIELD_ID']}
* #{...myDataProvider.options[':ROWKEY:,:ROWKEY:,:ROWKEY:']}
* #{...myDataProvider.options[':ROWID:,:ROWID:,:ROWID:']}
* --> binds to an array of {@link Option} generated by scanning the rows of the
* TableDataProvider (without moving the cursor). If the base object is a
* DataProvider, but not a TableDataProvider, the resulting Option[] will have
* one element. Note that the special :ROWKEY: and :ROWID: field IDs can be
* used here.
*
*
* #{...myDataProvider.stringList.FIELD_ID}
* #{...myDataProvider.stringList['FIELD_ID']}
* #{...myDataProvider.stringList[':ROWKEY:']}
* #{...myDataProvider.stringList[':ROWID:']}
* --> binds to an array of String generated by scanning the rows of the
* TableDataProvider (without moving the cursor) and calling toString() on each
* value. If the base object is a DataProvider, but not a TableDataProvider,
* the resulting String[] will have one element. Note that the special :ROWKEY:
* and :ROWID: field IDs can be used here.
*
* @author Joe Nuxoll
* @author Matthew Bohm (conversion to JSF 1.2)
*/
@Resolver
public class DataProviderELResolver extends ELResolver {
public static final String VALUE_KEY = "value"; // NOI18N
public static final String SELECT_ITEMS_KEY = "selectItems"; // NOI18N
public static final String OPTIONS_KEY = "options"; // NOI18N
public static final String STRING_LIST_KEY = "stringList"; // NOI18N
public static final String ROWID_FKEY = ":ROWID:"; // NOI18N
public static final String ROWKEY_FKEY = ":ROWKEY:"; // NOI18N
/**
* {@inheritDoc}
*/
public Object getValue(ELContext context, Object base, Object property) {
if (context == null) {
throw new NullPointerException();
}
Object result = null;
if (base instanceof DataProvider) {
DataProvider provider = (DataProvider) base;
if (VALUE_KEY.equals(property)) {
result = new ValueData(provider);
context.setPropertyResolved(true);
return result;
} else if (SELECT_ITEMS_KEY.equals(property)) {
result = new SelectItemsData(provider);
context.setPropertyResolved(true);
return result;
} else if (OPTIONS_KEY.equals(property)) {
result = new OptionsData(provider);
context.setPropertyResolved(true);
return result;
} else if (STRING_LIST_KEY.equals(property)) {
result = new StringListData(provider);
context.setPropertyResolved(true);
return result;
}
} else if (base instanceof ValueData) {
result = ((ValueData) base).getValue(property.toString());
context.setPropertyResolved(true);
return result;
} else if (base instanceof SelectItemsData) {
result = ((SelectItemsData) base).getSelectItems(property.toString());
context.setPropertyResolved(true);
return result;
}
return null;
}
/**
* {@inheritDoc}
*/
public void setValue(ELContext context, Object base, Object property, Object value) {
if (context == null) {
throw new NullPointerException();
}
if (base instanceof ValueData) {
((ValueData) base).setValue("" + property, value);
context.setPropertyResolved(true);
}
}
/**
* {@inheritDoc}
*/
public boolean isReadOnly(ELContext context, Object base, Object property) {
if (context == null) {
throw new NullPointerException();
}
if (base instanceof ValueData) {
boolean result = ((ValueData) base).isReadOnly("" + property);
context.setPropertyResolved(true);
return result;
}
if (base instanceof SelectItemsData) {
context.setPropertyResolved(true);
return true;
}
if (base instanceof DataProvider) {
if (VALUE_KEY.equals(property)) {
context.setPropertyResolved(true);
return true;
} else if (SELECT_ITEMS_KEY.equals(property) ||
OPTIONS_KEY.equals(property) ||
STRING_LIST_KEY.equals(property)) {
context.setPropertyResolved(true);
return true;
}
}
return false;
}
/**
* {@inheritDoc}
*/
public Class getType(ELContext context, Object base, Object property) {
if (context == null) {
throw new NullPointerException();
}
if (base instanceof DataProvider) {
if (VALUE_KEY.equals(property)) {
context.setPropertyResolved(true);
return ValueData.class;
} else if (SELECT_ITEMS_KEY.equals(property)) {
context.setPropertyResolved(true);
return SelectItemsData.class;
} else if (OPTIONS_KEY.equals(property)) {
context.setPropertyResolved(true);
return OptionsData.class;
} else if (STRING_LIST_KEY.equals(property)) {
context.setPropertyResolved(true);
return StringListData.class;
}
} else if (base instanceof ValueData) {
Class result = ((ValueData) base).getType("" + property);
context.setPropertyResolved(true);
return result;
} else if (base instanceof SelectItemsData) {
context.setPropertyResolved(true);
return ArrayList.class;
}
return null;
}
/**
* {@inheritDoc}
*/
public Iterator getFeatureDescriptors(ELContext context, Object base) {
if (context == null) {
throw new NullPointerException();
}
if (base == null) {
return Arrays.asList(new FeatureDescriptor[0]).iterator();
}
List result = new ArrayList();
if (base instanceof DataProvider) {
DataProvider provider = (DataProvider) base;
//for now, don't expose other keys, as they might confuse users
String[] exposedKeys = {VALUE_KEY, SELECT_ITEMS_KEY, OPTIONS_KEY};
for (int i = 0; i < exposedKeys.length; i++) {
FeatureDescriptor desc = new FeatureDescriptor();
desc.setName(exposedKeys[i]);
desc.setDisplayName(exposedKeys[i]);
desc.setValue(ELResolver.TYPE, String.class);
desc.setValue(ELResolver.RESOLVABLE_AT_DESIGN_TIME, true);
result.add(desc);
}
} else if (base instanceof ValueData) {
DataProvider provider = ((ValueData) base).getProvider();
FieldKey[] fieldKeys = provider.getFieldKeys();
if (fieldKeys != null) {
for (int i = 0; i < fieldKeys.length; i++) {
FeatureDescriptor desc = new FeatureDescriptor();
String fieldId = fieldKeys[i].getFieldId();
String displayName = fieldKeys[i].getDisplayName();
if (displayName == null) {
displayName = fieldId;
}
if (fieldId != null) {
desc.setName(fieldId);
desc.setDisplayName(displayName);
//could use String.class here, but it is
//syntactically legal to resolve other objects
//(like FieldKeys) and pass them in as the property
//parameter to getValue, so use Object.class
desc.setValue(ELResolver.TYPE, Object.class);
desc.setValue(ELResolver.RESOLVABLE_AT_DESIGN_TIME, true);
result.add(desc);
}
}
}
} else if (base instanceof SelectItemsData) {
//too complex
return null;
}
return result.iterator();
}
/**
* {@inheritDoc}
*/
public Class getCommonPropertyType(ELContext context,
Object base) {
if (context == null) {
throw new NullPointerException();
}
if (base instanceof DataProvider) {
return String.class;
}
if (base instanceof ValueData || base instanceof SelectItemsData) {
return Object.class;
}
return null;
}
// --------------------------------------------------------------- ValueData
/**
*
*/
private class ValueData {
/**
*
*/
protected DataProvider provider;
/**
*
*/
public ValueData(DataProvider provider) {
this.provider = provider;
}
//expose to outer class via getter
protected DataProvider getProvider() {
return provider;
}
/**
*
*/
public Object getValue(String fieldId) throws PropertyNotFoundException {
if (fieldId == null) {
return null;
}
Object value = null;
if (ROWKEY_FKEY.equals(fieldId)) {
if (provider instanceof TableDataProvider) {
return ((TableDataProvider) provider).getCursorRow();
}
if (provider instanceof TableRowDataProvider) {
return ((TableRowDataProvider) provider).getTableRow();
}
} else if (ROWID_FKEY.equals(fieldId)) {
if (provider instanceof TableDataProvider) {
return ((TableDataProvider) provider).getCursorRow().getRowId();
}
if (provider instanceof TableRowDataProvider) {
return ((TableRowDataProvider) provider).getTableRow().getRowId();
}
} else {
try {
FieldKey fk = provider.getFieldKey(fieldId);
if (fk != null) {
// - 6334873 - No exception on empty TDP
// value = provider.getValue(fk);
try {
value = provider.getValue(fk);
} catch (IndexOutOfBoundsException e) {
value = null;
}
//
} else {
throw new PropertyNotFoundException("Field '" + fieldId + "' not found in DataProvider.");
}
} catch (Exception x) {
throw new PropertyNotFoundException(x);
}
}
return value;
}
/**
*
*/
public void setValue(String fieldId, Object value) throws PropertyNotFoundException {
if (fieldId == null) {
return;
}
if (ROWKEY_FKEY.equals(fieldId) && value instanceof RowKey) {
if (provider instanceof TableDataProvider) {
try {
((TableDataProvider) provider).setCursorRow((RowKey) value);
return;
} catch (Exception x) {
x.printStackTrace();
}
}
if (provider instanceof TableRowDataProvider) {
try {
((TableRowDataProvider) provider).setTableRow((RowKey) value);
return;
} catch (Exception x) {
x.printStackTrace();
}
}
} else if (ROWID_FKEY.equals(fieldId) && value instanceof String) {
if (provider instanceof TableDataProvider) {
try {
RowKey row = ((TableDataProvider) provider).getRowKey((String) value);
((TableDataProvider) provider).setCursorRow(row);
return;
} catch (Exception x) {
x.printStackTrace();
}
}
if (provider instanceof TableRowDataProvider) {
try {
RowKey row = ((TableRowDataProvider) provider).getTableDataProvider().getRowKey((String) value);
((TableRowDataProvider) provider).setTableRow(row);
return;
} catch (Exception x) {
x.printStackTrace();
}
}
} else {
try {
FieldKey fk = provider.getFieldKey(fieldId);
if (fk != null) {
// - 6334873 - No exception on empty TDP
// provider.setValue(fk, value);
try {
provider.setValue(fk, value);
} catch (IndexOutOfBoundsException e) {
// Swallow and ignore
}
//
} else {
throw new PropertyNotFoundException("Field '" + fieldId + "' not found in DataProvider.");
}
} catch (Exception x) {
throw new PropertyNotFoundException(x);
}
}
}
/**
*
*/
public boolean isReadOnly(String fieldId) throws PropertyNotFoundException {
if (ROWKEY_FKEY.equals(fieldId) ||
ROWID_FKEY.equals(fieldId)) {
return false;
}
try {
FieldKey fk = provider.getFieldKey(fieldId);
if (fk != null) {
return provider.isReadOnly(fk);
} else {
throw new PropertyNotFoundException("Field '" + fieldId + "' not found in DataProvider.");
}
} catch (Exception x) {
throw new PropertyNotFoundException(x);
}
}
/**
*
*/
public Class getType(String fieldId) throws PropertyNotFoundException {
if (ROWKEY_FKEY.equals(fieldId)) {
return RowKey.class;
} else if (ROWID_FKEY.equals(fieldId)) {
return String.class;
}
try {
FieldKey fk = provider.getFieldKey(fieldId);
if (fk != null) {
return provider.getType(fk);
} else {
throw new PropertyNotFoundException("Field '" + fieldId + "' not found in DataProvider.");
}
} catch (Exception x) {
throw new PropertyNotFoundException(x);
}
}
}
// --------------------------------------------------------- SelectItemsData
/**
*
*/
private class SelectItemsData {
/**
*
*/
protected DataProvider provider;
/**
*
*/
public SelectItemsData(DataProvider provider) {
this.provider = provider;
}
/**
*
*/
protected Object getValue(DataProvider provider, String fieldId, RowKey row) {
if (fieldId == null) {
return null;
}
Object value = null;
if (ROWKEY_FKEY.equals(fieldId)) {
value = row != null
? row
: (provider instanceof TableRowDataProvider
? ((TableRowDataProvider) provider).getTableRow()
: null);
} else if (ROWID_FKEY.equals(fieldId)) {
value = row != null
? row.getRowId()
: (provider instanceof TableRowDataProvider
? ((TableRowDataProvider) provider).getTableRow().getRowId()
: null);
} else {
try {
FieldKey fk = provider.getFieldKey(fieldId);
if (fk != null) {
if (row != null &&
provider instanceof TableDataProvider) {
value = ((TableDataProvider) provider).getValue(fk, row);
} else {
value = provider.getValue(fk);
}
}
} catch (Exception x) {
// throw the puppy to help out the developer
// diagnose *his* application problem.
if (x instanceof RuntimeException) {
throw (RuntimeException) x;
} else {
// should never be here....
x.printStackTrace();
}
}
}
return value;
}
/**
*
*/
protected Object getSelectItem(Object itemValue, Object itemLabel, Object itemDescr) {
if (itemValue != null && itemLabel != null && itemDescr != null) {
return new SelectItem(itemValue, itemLabel.toString(), itemDescr.toString());
} else if (itemValue != null && itemLabel != null) {
return new SelectItem(itemValue, itemLabel.toString());
} else if (itemValue != null) {
return new SelectItem(itemValue);
}
return null;
}
/**
*
*/
public Object getSelectItems(String columns) {
/*
* returns a List of Objects or SelectItems
*
* (examples based on PERSON database table keys):
*
* "NAME" -->
* returns a List filled with SelectItem objects,
* with the 'itemValue' set to NAME's values
*
* "PERSONID,NAME" -->
* returns a List filled with SelectItem objects,
* with the 'itemValue' set to PERSONID's values,
* and the 'itemLabel' set to NAME's values
*
* "PERSONID,NAME,JOBTITLE" -->
* returns a List filled with SelectItem objects,
* with the 'itemValue' set to PERSONID's values,
* the 'itemLabel' set to NAME's values,
* and the 'itemDescription' set to JOBTITLE's values
*
* Any cases that are out-of-scope throw IllegalArgumentException
*/
String valueId = null;
String labelId = null;
String descrId = null;
List cols = new ArrayList();
String col;
boolean quoteOpen = false;
int currStart = 0;
for (int i = 0; i < columns.length(); i++) {
char c = columns.charAt(i);
if (c == '\'') {
quoteOpen = !quoteOpen;
} else if (c == ',' && !quoteOpen) {
col = columns.substring(currStart, i);
if (col.length() > 0) {
cols.add(col);
}
currStart = i + 1;
}
}
//get the remaining stuff after the last period
if (currStart < columns.length()) {
col = columns.substring(currStart);
cols.add(col);
}
String[] args = (String[]) cols.toArray(new String[cols.size()]);
if (args.length < 1) {
throw new IllegalArgumentException();
}
valueId = args[0];
if (args.length > 1) {
labelId = args[1];
}
if (args.length > 2) {
descrId = args[2];
}
ArrayList list = new ArrayList();
if (provider instanceof TableDataProvider) {
TableDataProvider tableProvider = (TableDataProvider) provider;
int rowCount = tableProvider.getRowCount();
if (rowCount < 0) {
rowCount = 999;
}
RowKey[] rows = tableProvider.getRowKeys(rowCount, null);
for (int i = 0; i < rows.length; i++) {
Object itemValue = getValue(provider, valueId, rows[i]);
Object itemLabel = getValue(provider, labelId, rows[i]);
Object itemDescr = getValue(provider, descrId, rows[i]);
Object selectItem = getSelectItem(itemValue, itemLabel, itemDescr);
if (selectItem != null) {
list.add(selectItem);
}
}
} else {
Object itemValue = getValue(provider, valueId, null);
Object itemLabel = getValue(provider, labelId, null);
Object itemDescr = getValue(provider, descrId, null);
Object selectItem = getSelectItem(itemValue, itemLabel, itemDescr);
if (selectItem != null) {
list.add(selectItem);
}
}
return list;
}
}
// ------------------------------------------------------------- OptionsData
/**
*
*/
private class OptionsData extends SelectItemsData {
public OptionsData(DataProvider provider) {
super(provider);
}
@Override
protected Object getSelectItem(Object itemValue, Object itemLabel, Object itemDescr) {
if (itemValue != null && itemLabel != null && itemDescr != null) {
return new Option(itemValue, itemLabel.toString(), itemDescr.toString());
} else if (itemValue != null && itemLabel != null) {
return new Option(itemValue, itemLabel.toString());
} else if (itemValue != null) {
return new Option(itemValue);
}
return null;
}
}
private class StringListData extends SelectItemsData {
public StringListData(DataProvider provider) {
super(provider);
}
@Override
protected Object getSelectItem(Object itemValue, Object itemLabel, Object itemDescr) {
if (itemValue != null) {
return new String(itemValue.toString());
}
return "";
}
}
}