org.python.core
Class PySequence

java.lang.Object
  org.python.core.PyObject
      org.python.core.PySequence

All Implemented Interfaces:

java.io.Serializable

Direct Known Subclasses:

PyArray, PyBaseString, PySequenceList, PyXRange

public abstract class PySequence

extends PyObject

The abstract superclass of PyObjects that implements a Sequence. Minimize the work in creating such objects. Method names are designed to make it possible for PySequence to implement java.util.List interface when JDK 1.2 is ubiquitous. All subclasses must declare that they implement the ClassDictInit interface, and provide an classDictInit() method that calls PySequence.classDictInit(). Subclasses must also implement get, getslice, and repeat methods. Subclasses that are mutable should also implement: set, setslice, del, and delRange.

See Also:

Serialized Form

Nested Class Summary

Nested classes inherited from class org.python.core.PyObject

PyObject.ConversionException

Field Summary

Fields inherited from class org.python.core.PyObject

exposed_name

Constructor Summary

PySequence()
This constructor is used by PyJavaClass.init()

Method Summary

void	__delitem__(PyObject index) Equivalent to the standard Python __delitem__ method.
void	__delslice__(PyObject s_start, PyObject s_stop, PyObject s_step)
PyObject	__eq__(PyObject o) Equivalent to the standard Python __eq__ method.
PyObject	__finditem__(int index) A variant of the __finditem__ method which accepts a primitive int as the key.
PyObject	__finditem__(PyObject index) Very similar to the standard Python __getitem__ method.
PyObject	__ge__(PyObject o) Equivalent to the standard Python __ge__ method.
PyObject	__getitem__(PyObject index) Equivalent to the standard Python __getitem__ method.
PyObject	__getslice__(PyObject s_start, PyObject s_stop, PyObject s_step)
PyObject	__gt__(PyObject o) Equivalent to the standard Python __gt__ method.
PyObject	__iter__() Return an iterator that is used to iterate the element of this sequence.
PyObject	__le__(PyObject o) Equivalent to the standard Python __le__ method.
PyObject	__lt__(PyObject o) Equivalent to the standard Python __lt__ method.
PyObject	__ne__(PyObject o) Equivalent to the standard Python __ne__ method.
boolean	__nonzero__() Equivalent to the standard Python __nonzero__ method.
void	__setitem__(int index, PyObject value) A variant of the __setitem__ method which accepts a primitive int as the key.
void	__setitem__(PyObject index, PyObject value) Equivalent to the standard Python __setitem__ method.
void	__setslice__(PyObject s_start, PyObject s_stop, PyObject s_step, PyObject value)
java.lang.Object	__tojava__(java.lang.Class c) Equivalent to the Jython __tojava__ method.
static void	classDictInit(PyObject dict) Internal use only.
boolean	isMappingType()
boolean	isNumberType()

Methods inherited from class org.python.core.PyObject

__abs__, __add__, __and__, __call__, __call__, __call__, __call__, __call__, __call__, __call__, __call__, __cmp__, __coerce__, __coerce_ex__, __complex__, __contains__, __delattr__, __delattr__, __delete__, __delitem__, __delslice__, __dir__, __div__, __divmod__, __findattr__, __findattr__, __finditem__, __float__, __floordiv__, __get__, __getattr__, __getattr__, __getitem__, __getslice__, __hash__, __hex__, __iadd__, __iand__, __idiv__, __idivmod__, __ifloordiv__, __ilshift__, __imod__, __imul__, __int__, __invert__, __ior__, __ipow__, __irshift__, __isub__, __iternext__, __itruediv__, __ixor__, __len__, __long__, __lshift__, __mod__, __mul__, __neg__, __not__, __oct__, __or__, __pos__, __pow__, __pow__, __radd__, __rand__, __rdiv__, __rdivmod__, __repr__, __rfloordiv__, __rlshift__, __rmod__, __rmul__, __ror__, __rpow__, __rrshift__, __rshift__, __rsub__, __rtruediv__, __rxor__, __set__, __setattr__, __setattr__, __setitem__, __setslice__, __str__, __sub__, __truediv__, __xor__, _add, _and, _callextra, _cmp, _div, _divmod, _doget, _doget, _doset, _eq, _floordiv, _ge, _gt, _in, _is, _isnot, _jcall, _jcallexc, _jthrow, _le, _lshift, _lt, _mod, _mul, _ne, _notin, _or, _pow, _rshift, _sub, _truediv, _xor, asInt, asLong, asName, asString, asStringOrNull, dispatch__init__, equals, fastGetClass, fastGetDict, getDict, getDoc, getType, hashCode, implementsDescrDelete, implementsDescrSet, invoke, invoke, invoke, invoke, invoke, isCallable, isDataDescr, isSequenceType, noAttributeError, readonlyAttributeError, safeRepr, toString, typeSetup

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

PySequence

public PySequence()

This constructor is used by PyJavaClass.init()

Method Detail

classDictInit

public static void classDictInit(PyObject dict)
                          throws PyIgnoreMethodTag

Internal use only. Do not call this method explicit.

Throws:

PyIgnoreMethodTag

__nonzero__

public boolean __nonzero__()

Description copied from class: PyObject

Equivalent to the standard Python __nonzero__ method. Returns whether of not a given PyObject is considered true.

Overrides:

__nonzero__ in class PyObject

__iter__

public PyObject __iter__()

Description copied from class: PyObject

Return an iterator that is used to iterate the element of this sequence. From version 2.2, this method is the primary protocol for looping over sequences.

If a PyObject subclass should support iteration based in the __finditem__() method, it must supply an implementation of __iter__() like this:

    public PyObject __iter__() {
        return new PySequenceIter(this);
    }
 

When iterating over a python sequence from java code, it should be done with code like this:

    PyObject iter = seq.__iter__();
    for (PyObject item; (item = iter.__next__()) != null;  {
        // Do somting with item
    }
 

Overrides:

__iter__ in class PyObject

__eq__

public PyObject __eq__(PyObject o)

Description copied from class: PyObject

Equivalent to the standard Python __eq__ method.

Overrides:

__eq__ in class PyObject

Parameters:

o - the object to compare this with.

Returns:

the result of the comparison.

__ne__

public PyObject __ne__(PyObject o)

Description copied from class: PyObject

Equivalent to the standard Python __ne__ method.

Overrides:

__ne__ in class PyObject

Parameters:

o - the object to compare this with.

Returns:

the result of the comparison.

__lt__

public PyObject __lt__(PyObject o)

Description copied from class: PyObject

Equivalent to the standard Python __lt__ method.

Overrides:

__lt__ in class PyObject

Parameters:

o - the object to compare this with.

Returns:

the result of the comparison.

__le__

public PyObject __le__(PyObject o)

Description copied from class: PyObject

Equivalent to the standard Python __le__ method.

Overrides:

__le__ in class PyObject

Parameters:

o - the object to compare this with.

Returns:

the result of the comparison.

__gt__

public PyObject __gt__(PyObject o)

Description copied from class: PyObject

Equivalent to the standard Python __gt__ method.

Overrides:

__gt__ in class PyObject

Parameters:

o - the object to compare this with.

Returns:

the result of the comparison.

__ge__

public PyObject __ge__(PyObject o)

Description copied from class: PyObject

Equivalent to the standard Python __ge__ method.

Overrides:

__ge__ in class PyObject

Parameters:

o - the object to compare this with.

Returns:

the result of the comparison.

__finditem__

public PyObject __finditem__(int index)

Description copied from class: PyObject

A variant of the __finditem__ method which accepts a primitive int as the key. By default, this method will call __finditem__(PyObject key) with the appropriate args. The only reason to override this method is for performance.

Overrides:

__finditem__ in class PyObject

Parameters:

index - the key to lookup in this sequence.

Returns:

the value corresponding to key or null if key is not found.

See Also:

PyObject.__finditem__(PyObject)

__finditem__

public PyObject __finditem__(PyObject index)

Description copied from class: PyObject

Very similar to the standard Python __getitem__ method. Instead of throwing a KeyError if the item isn't found, this just returns null. Classes that wish to implement __getitem__ should override this method instead (with the appropriate semantics.

Overrides:

__finditem__ in class PyObject

Parameters:

index - the key to lookup in this container

Returns:

the value corresponding to key or null if key is not found

__getitem__

public PyObject __getitem__(PyObject index)

Description copied from class: PyObject

Equivalent to the standard Python __getitem__ method. This method should not be overridden. Override the __finditem__ method instead.

Overrides:

__getitem__ in class PyObject

Parameters:

index - the key to lookup in this container.

Returns:

the value corresponding to that key.

See Also:

PyObject.__finditem__(PyObject)

isMappingType

public boolean isMappingType()
                      throws PyIgnoreMethodTag

Overrides:

isMappingType in class PyObject

Throws:

PyIgnoreMethodTag

isNumberType

public boolean isNumberType()
                     throws PyIgnoreMethodTag

Overrides:

isNumberType in class PyObject

Throws:

PyIgnoreMethodTag

__getslice__

public PyObject __getslice__(PyObject s_start,
                             PyObject s_stop,
                             PyObject s_step)

Overrides:

__getslice__ in class PyObject

__setslice__

public void __setslice__(PyObject s_start,
                         PyObject s_stop,
                         PyObject s_step,
                         PyObject value)

Overrides:

__setslice__ in class PyObject

__delslice__

public void __delslice__(PyObject s_start,
                         PyObject s_stop,
                         PyObject s_step)

Overrides:

__delslice__ in class PyObject

__setitem__

public void __setitem__(int index,
                        PyObject value)

Description copied from class: PyObject

A variant of the __setitem__ method which accepts a primitive int as the key. By default, this will call __setitem__(PyObject key, PyObject value) with the appropriate args. The only reason to override this method is for performance.

Overrides:

__setitem__ in class PyObject

Parameters:

index - the key whose value will be set

value - the value to set this key to

See Also:

PyObject.__setitem__(PyObject, PyObject)

__setitem__

public void __setitem__(PyObject index,
                        PyObject value)

Description copied from class: PyObject

Equivalent to the standard Python __setitem__ method.

Overrides:

__setitem__ in class PyObject

Parameters:

index - the key whose value will be set

value - the value to set this key to

__delitem__

public void __delitem__(PyObject index)

Description copied from class: PyObject

Equivalent to the standard Python __delitem__ method.

Overrides:

__delitem__ in class PyObject

Parameters:

index - the key to be removed from the container

__tojava__

public java.lang.Object __tojava__(java.lang.Class c)
                            throws PyIgnoreMethodTag

Description copied from class: PyObject

Equivalent to the Jython __tojava__ method. Tries to coerce this object to an instance of the requested Java class. Returns the special object Py.NoConversion if this PyObject can not be converted to the desired Java class.

Overrides:

__tojava__ in class PyObject

Parameters:

c - the Class to convert this PyObject to.

Throws:

PyIgnoreMethodTag