Package com.illumon.iris.db.util

Class PythonScopeJpyImpl

java.lang.Object

com.illumon.iris.db.util.PythonScopeJpyImpl

All Implemented Interfaces:

PythonScope<org.jpy.PyObject>

public class PythonScopeJpyImpl
extends Object
implements PythonScope<org.jpy.PyObject>

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	PythonScopeJpyImpl.CallableWrapper	When given a pyObject that is a callable, we stick it inside the callable wrapper, which implements a call() varargs method, so that we can call it using __call__ without all of the JPy nastiness.

Constructor Summary

Constructors

Constructor	Description
PythonScopeJpyImpl(org.jpy.PyDictWrapper dict)

Method Summary

Modifier and Type	Method	Description
boolean	containsKey(String name)	Finds out if a variable is in scope
static Object	convert(org.jpy.PyObject pyObject)	Converts a pyObject into an appropriate Java object for use outside of JPy.
String	convertStringKey(org.jpy.PyObject key)	The helper method to turn a raw key into a string key.
Object	convertValue(org.jpy.PyObject value)	The helper method to turn a raw value into an implementation specific object.
Stream<Map.Entry<org.jpy.PyObject,org.jpy.PyObject>>	getEntriesRaw()	Retrieves all keys and values from the given scope.
Stream<org.jpy.PyObject>	getKeysRaw()	Retrieves all keys from the give scope.
Optional<org.jpy.PyObject>	getValueRaw(String name)	Retrieves a value from the given scope.
org.jpy.PyDictWrapper	globals()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface com.illumon.iris.db.util.PythonScope

getEntries, getEntriesMap, getKeys, getKeysCollection, getValue, getValue, getValueUnchecked

Constructor Details

PythonScopeJpyImpl

public PythonScopeJpyImpl(org.jpy.PyDictWrapper dict)

Method Details

getValueRaw

public Optional<org.jpy.PyObject> getValueRaw(String name)

Description copied from interface: PythonScope

Retrieves a value from the given scope.

No conversion is done.

Specified by:

getValueRaw in interface PythonScope<org.jpy.PyObject>

Parameters:

name - the name of the python variable

Returns:

the value, or empty

getKeysRaw

public Stream<org.jpy.PyObject> getKeysRaw()

Description copied from interface: PythonScope

Retrieves all keys from the give scope.

No conversion is done.

Technically, the keys can be tuples...

Specified by:

getKeysRaw in interface PythonScope<org.jpy.PyObject>

Returns:

the keys

getEntriesRaw

public Stream<Map.Entry<org.jpy.PyObject,org.jpy.PyObject>> getEntriesRaw()

Description copied from interface: PythonScope

Retrieves all keys and values from the given scope.

No conversion is done.

Specified by:

getEntriesRaw in interface PythonScope<org.jpy.PyObject>

Returns:

the keys and values

containsKey

public boolean containsKey(String name)

Description copied from interface: PythonScope

Finds out if a variable is in scope

Specified by:

containsKey in interface PythonScope<org.jpy.PyObject>

Parameters:

name - the name of the python variable

Returns:

true iff the scope contains the variable

convertStringKey

public String convertStringKey(org.jpy.PyObject key)

Description copied from interface: PythonScope

The helper method to turn a raw key into a string key.

Note: this assumes that all the keys are strings, which is not always true. Keys can also be tuples. TODO: revise interface as appropriate if this becomes an issue.

Specified by:

convertStringKey in interface PythonScope<org.jpy.PyObject>

Parameters:

key - the raw key

Returns:

the string key

convertValue

public Object convertValue(org.jpy.PyObject value)

Description copied from interface: PythonScope

The helper method to turn a raw value into an implementation specific object.

This method should NOT convert PyObj of None type to null - we need to preserve the None object so it works with other Optional return values.

Specified by:

convertValue in interface PythonScope<org.jpy.PyObject>

Parameters:

value - the raw value

Returns:

the converted object value

convert

public static Object convert(org.jpy.PyObject pyObject)

Converts a pyObject into an appropriate Java object for use outside of JPy.

If we're a List, Dictionary, or Callable, then we wrap them in a java object.

If it is a primitive (or a wrapped Java object); we convert it to the java object.

Otherwise we return the raw PyObject and the user can do with it what they will.

Parameters:

pyObject - the JPy wrapped PyObject.

Returns:

a Java object representing the underlying JPy object.

globals

public org.jpy.PyDictWrapper globals()

Specified by:

globals in interface PythonScope<org.jpy.PyObject>