protected Object getValueBody(OgnlContext context, Object source) throws OgnlException {
Object result, root = context.getRoot();
int count = jjtGetNumChildren();
Object[] args = OgnlRuntime.getObjectArrayPool().create(count);
try {
for (int i = 0; i < count; ++i) {
args[i] = _children[i].getValue(context, root);
}
if (isArray) {
if (args.length == 1) {
try {
Class componentClass = OgnlRuntime.classForName(context, className);
List sourceList = null;
int size;
if (args[0] instanceof List) {
sourceList = (List) args[0];
size = sourceList.size();
} else {
size = (int) OgnlOps.longValue(args[0]);
}
result = Array.newInstance(componentClass, size);
if (sourceList != null) {
TypeConverter converter = context.getTypeConverter();
for (int i = 0, icount = sourceList.size(); i < icount; i++) {
Object o = sourceList.get(i);
if ((o == null) || componentClass.isInstance(o)) {
Array.set(result, i, o);
} else {
Array.set(
result,
i,
converter.convertValue(context, null, null, null, o, componentClass));
}
}
}
} catch (ClassNotFoundException ex) {
throw new OgnlException("array component class '" + className + "' not found", ex);
}
} else {
throw new OgnlException("only expect array size or fixed initializer list");
}
} else {
result = OgnlRuntime.callConstructor(context, className, args);
}
return result;
} finally {
OgnlRuntime.getObjectArrayPool().recycle(args);
}
}
protected Object getValueBody(OgnlContext context, Object source) throws OgnlException {
Node expr = _children[0];
List answer = new ArrayList();
ElementsAccessor elementsAccessor =
OgnlRuntime.getElementsAccessor(OgnlRuntime.getTargetClass(source));
for (Enumeration e = elementsAccessor.getElements(source); e.hasMoreElements(); ) {
Object next = e.nextElement();
if (OgnlOps.booleanValue(expr.getValue(context, next))) {
answer.add(next);
break;
}
}
return answer;
}
public boolean hasSetProperty(OgnlContext context, Object target, Object oname)
throws OgnlException {
try {
return OgnlRuntime.hasSetProperty(context, target, oname);
} catch (IntrospectionException ex) {
throw new OgnlException("checking if " + target + " has settable property " + oname, ex);
}
}
/** Returns OgnlRuntime.NotFound if the property does not exist. */
public Object getPossibleProperty(Map context, Object target, String name) throws OgnlException {
Object result;
OgnlContext ognlContext = (OgnlContext) context;
try {
if ((result = OgnlRuntime.getMethodValue(ognlContext, target, name, true))
== OgnlRuntime.NotFound) {
result = OgnlRuntime.getFieldValue(ognlContext, target, name, true);
}
} catch (IntrospectionException ex) {
throw new OgnlException(name, ex);
} catch (OgnlException ex) {
throw ex;
} catch (Exception ex) {
throw new OgnlException(name, ex);
}
return result;
}
public void testCanSetADependentObject() throws Exception {
String dogName = "fido";
OgnlRuntime.setNullHandler(
Owner.class,
new NullHandler() {
public Object nullMethodResult(Map map, Object o, String s, Object[] objects) {
return null;
}
public Object nullPropertyValue(Map map, Object o, Object o1) {
String methodName = o1.toString();
String getter =
"set" + methodName.substring(0, 1).toUpperCase() + methodName.substring(1);
Method[] methods = o.getClass().getDeclaredMethods();
System.out.println(getter);
for (Method method : methods) {
String name = method.getName();
if (!getter.equals(name) || (method.getParameterTypes().length != 1)) {
continue;
} else {
Class clazz = method.getParameterTypes()[0];
try {
Object param = clazz.newInstance();
method.invoke(o, new Object[] {param});
return param;
} catch (Exception e) {
throw new RuntimeException(e);
}
}
}
return null;
}
});
Owner owner = new Owner();
Map context = Ognl.createDefaultContext(owner);
Map props = new HashMap();
props.put("dog.name", dogName);
ognlUtil.setProperties(props, owner, context);
assertNotNull("expected Ognl to create an instance of Dog", owner.getDog());
assertEquals(dogName, owner.getDog().getName());
}
public String toGetSourceString(OgnlContext context, Object target) {
String result = "new " + className;
Class clazz = null;
Object ctorValue = null;
try {
clazz = OgnlRuntime.classForName(context, className);
ctorValue = this.getValueBody(context, target);
context.setCurrentObject(ctorValue);
if (clazz != null && ctorValue != null) {
context.setCurrentType(ctorValue.getClass());
context.setCurrentAccessor(ctorValue.getClass());
}
if (isArray) context.put("_ctorClass", clazz);
} catch (Throwable t) {
throw OgnlOps.castToRuntime(t);
}
try {
if (isArray) {
if (_children[0] instanceof ASTConst) {
result = result + "[" + _children[0].toGetSourceString(context, target) + "]";
} else if (ASTProperty.class.isInstance(_children[0])) {
result =
result
+ "["
+ ExpressionCompiler.getRootExpression(_children[0], target, context)
+ _children[0].toGetSourceString(context, target)
+ "]";
} else if (ASTChain.class.isInstance(_children[0])) {
result = result + "[" + _children[0].toGetSourceString(context, target) + "]";
} else {
result = result + "[] " + _children[0].toGetSourceString(context, target);
}
} else {
result = result + "(";
if ((_children != null) && (_children.length > 0)) {
Object[] values = new Object[_children.length];
String[] expressions = new String[_children.length];
Class[] types = new Class[_children.length];
// first populate arrays with child values
for (int i = 0; i < _children.length; i++) {
Object objValue = _children[i].getValue(context, context.getRoot());
String value = _children[i].toGetSourceString(context, target);
if (!ASTRootVarRef.class.isInstance(_children[i])) {
value = ExpressionCompiler.getRootExpression(_children[i], target, context) + value;
}
String cast = "";
if (ExpressionCompiler.shouldCast(_children[i])) {
cast = (String) context.remove(ExpressionCompiler.PRE_CAST);
}
if (cast == null) cast = "";
if (!ASTConst.class.isInstance(_children[i])) value = cast + value;
values[i] = objValue;
expressions[i] = value;
types[i] = context.getCurrentType();
}
// now try and find a matching constructor
Constructor[] cons = clazz.getConstructors();
Constructor ctor = null;
Class[] ctorParamTypes = null;
for (int i = 0; i < cons.length; i++) {
Class[] ctorTypes = cons[i].getParameterTypes();
if (OgnlRuntime.areArgsCompatible(values, ctorTypes)
&& (ctor == null || OgnlRuntime.isMoreSpecific(ctorTypes, ctorParamTypes))) {
ctor = cons[i];
ctorParamTypes = ctorTypes;
}
}
if (ctor == null)
ctor =
OgnlRuntime.getConvertedConstructorAndArgs(
context,
clazz,
OgnlRuntime.getConstructors(clazz),
values,
new Object[values.length]);
if (ctor == null)
throw new NoSuchMethodException(
"Unable to find constructor appropriate for arguments in class: " + clazz);
ctorParamTypes = ctor.getParameterTypes();
// now loop over child values again and build up the actual source string
for (int i = 0; i < _children.length; i++) {
if (i > 0) {
result = result + ", ";
}
String value = expressions[i];
if (types[i].isPrimitive()) {
String literal = OgnlRuntime.getNumericLiteral(types[i]);
if (literal != null) value += literal;
}
if (ctorParamTypes[i] != types[i]) {
if (values[i] != null
&& !types[i].isPrimitive()
&& !values[i].getClass().isArray()
&& !ASTConst.class.isInstance(_children[i])) {
value =
"("
+ OgnlRuntime.getCompiler()
.getInterfaceClass(values[i].getClass())
.getName()
+ ")"
+ value;
} else if (!ASTConst.class.isInstance(_children[i])
|| (ASTConst.class.isInstance(_children[i]) && !types[i].isPrimitive())) {
if (!types[i].isArray()
&& types[i].isPrimitive()
&& !ctorParamTypes[i].isPrimitive())
value =
"new "
+ ExpressionCompiler.getCastString(
OgnlRuntime.getPrimitiveWrapperClass(types[i]))
+ "("
+ value
+ ")";
else value = " ($w) " + value;
}
}
result += value;
}
}
result = result + ")";
}
context.setCurrentType(ctorValue != null ? ctorValue.getClass() : clazz);
context.setCurrentAccessor(clazz);
context.setCurrentObject(ctorValue);
} catch (Throwable t) {
throw OgnlOps.castToRuntime(t);
}
context.remove("_ctorClass");
return result;
}
