/**
* Compares this <code>PropertyDescriptor</code> against the specified object. Returns true if the
* objects are the same. Two <code>PropertyDescriptor</code>s are the same if the read, write,
* property types, property editor and flags are equivalent.
*
* @since 1.4
*/
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj != null && obj instanceof PropertyDescriptor) {
PropertyDescriptor other = (PropertyDescriptor) obj;
Method otherReadMethod = other.getReadMethod();
Method otherWriteMethod = other.getWriteMethod();
if (!compareMethods(getReadMethod(), otherReadMethod)) {
return false;
}
if (!compareMethods(getWriteMethod(), otherWriteMethod)) {
return false;
}
if (getPropertyType() == other.getPropertyType()
&& getPropertyEditorClass() == other.getPropertyEditorClass()
&& bound == other.isBound()
&& constrained == other.isConstrained()
&& writeMethodName == other.writeMethodName
&& readMethodName == other.readMethodName) {
return true;
}
}
return false;
}
/**
* Package-private constructor. Merge two property descriptors. Where they conflict, give the
* second argument (y) priority over the first argument (x).
*
* @param x The first (lower priority) PropertyDescriptor
* @param y The second (higher priority) PropertyDescriptor
*/
PropertyDescriptor(PropertyDescriptor x, PropertyDescriptor y) {
super(x, y);
if (y.baseName != null) {
baseName = y.baseName;
} else {
baseName = x.baseName;
}
if (y.readMethodName != null) {
readMethodName = y.readMethodName;
} else {
readMethodName = x.readMethodName;
}
if (y.writeMethodName != null) {
writeMethodName = y.writeMethodName;
} else {
writeMethodName = x.writeMethodName;
}
if (y.propertyTypeRef != null) {
propertyTypeRef = y.propertyTypeRef;
} else {
propertyTypeRef = x.propertyTypeRef;
}
// Figure out the merged read method.
Method xr = x.getReadMethod();
Method yr = y.getReadMethod();
// Normally give priority to y's readMethod.
try {
if (yr != null && yr.getDeclaringClass() == getClass0()) {
setReadMethod(yr);
} else {
setReadMethod(xr);
}
} catch (IntrospectionException ex) {
// fall through
}
// However, if both x and y reference read methods in the same class,
// give priority to a boolean "is" method over a boolean "get" method.
if (xr != null
&& yr != null
&& xr.getDeclaringClass() == yr.getDeclaringClass()
&& xr.getReturnType() == boolean.class
&& yr.getReturnType() == boolean.class
&& xr.getName().indexOf("is") == 0
&& yr.getName().indexOf("get") == 0) {
try {
setReadMethod(xr);
} catch (IntrospectionException ex) {
// fall through
}
}
Method xw = x.getWriteMethod();
Method yw = y.getWriteMethod();
try {
if (yw != null && yw.getDeclaringClass() == getClass0()) {
setWriteMethod(yw);
} else {
setWriteMethod(xw);
}
} catch (IntrospectionException ex) {
// Fall through
}
if (y.getPropertyEditorClass() != null) {
setPropertyEditorClass(y.getPropertyEditorClass());
} else {
setPropertyEditorClass(x.getPropertyEditorClass());
}
bound = x.bound | y.bound;
constrained = x.constrained | y.constrained;
}
