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PyBeanProperty.java
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88 lines (74 loc) · 2.49 KB
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// Copyright (c) Corporation for National Research Initiatives
package org.python.core;
import java.lang.reflect.*;
@Untraversable
public class PyBeanProperty extends PyReflectedField {
public Method getMethod, setMethod;
public Class<?> myType;
String __name__;
public PyBeanProperty(String name, Class<?> myType, Method getMethod, Method setMethod) {
__name__ = name;
this.getMethod = getMethod;
this.setMethod = setMethod;
this.myType = myType;
}
@Override
public PyObject _doget(PyObject self) {
if (self == null) {
if (field != null) {
return super._doget(null);
}
throw Py.AttributeError("instance attr: "+__name__);
}
if (getMethod == null) {
throw Py.AttributeError("write-only attr: "+__name__);
}
Object iself = Py.tojava(self, getMethod.getDeclaringClass());
try {
Object value = getMethod.invoke(iself, (Object[])Py.EmptyObjects);
return Py.java2py(value);
} catch (Exception e) {
throw Py.JavaError(e);
}
}
@Override
public boolean _doset(PyObject self, PyObject value) {
if (self == null) {
if (field != null) {
return super._doset(null, value);
}
throw Py.AttributeError("instance attr: "+__name__);
}
if (setMethod == null) {
throw Py.AttributeError("read-only attr: "+__name__);
}
Object iself = Py.tojava(self, setMethod.getDeclaringClass());
// Special handling of tuples - try to call a class constructor
if (value instanceof PyTuple && myType != PyObject.class) {
try {
value = Py.java2py(myType).__call__(((PyTuple)value).getArray());
} catch (Throwable t) {
throw Py.JavaError(t);
}
}
Object jvalue = Py.tojava(value, myType);
try {
setMethod.invoke(iself, jvalue);
} catch (Exception e) {
throw Py.JavaError(e);
}
return true;
}
public PyBeanProperty copy() {
return new PyBeanProperty(__name__, myType, getMethod, setMethod);
}
@Override
public String toString() {
String typeName = "unknown";
if (myType != null) {
typeName = myType.getName();
}
return "<beanProperty "+__name__+" type: "+typeName+" "+
Py.idstr(this)+">";
}
}