org.apache.uima.cas.admin
Class CASFactory

java.lang.Object
  org.apache.uima.cas.admin.CASFactory

public abstract class CASFactory
extends Object

Factory class to create CASMgr objects. This is the only class in this package. Once you have created a CAS object, you can use the methods there to create and access objects implementing the other interfaces. For the OO API, no direct access to any of the implementations is provided. Should you want to provide an alternative implementation of the CAS interfaces in this package, the only thing you have to change is the implementation of the createCAS() method here.

All methods in this class are static. CASFactory objects can not be created.

Field Summary

static boolean

USE_JCAS_CACHE_DEFAULT

Constructor Summary

CASFactory()

Method Summary

static CASMgr	createCAS() Create a new CASMgr object.
static CASMgr	createCAS(int initialHeapSize) Create a new CASMgr object.
static CASMgr	createCAS(int initialHeapSize, boolean useJcasCache)
static CASMgr	createCAS(int initialHeapSize, TypeSystem ts) Create a new CASMgr object from a give type system.
static CASMgr	createCAS(int initialHeapSize, TypeSystem ts, boolean useJcasCache)
static CASMgr	createCAS(TypeSystem ts) Create a new CASMgr object from a give type system.
static CASMgr	createCAS(TypeSystem ts, boolean useJcasCache)
static TypeSystemMgr	createTypeSystem() Create a new type system that is populated with the built-in CAS types.

Methods inherited from class java.lang.Object

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

Field Detail

USE_JCAS_CACHE_DEFAULT

public static final boolean USE_JCAS_CACHE_DEFAULT

See Also:

Constant Field Values

Constructor Detail

CASFactory

public CASFactory()

Method Detail

createCAS

public static CASMgr createCAS()

Create a new CASMgr object.

Returns:

A new CASMgr object.

createCAS

public static CASMgr createCAS(int initialHeapSize)

Create a new CASMgr object.

Parameters:

initialHeapSize - The initial size of the internal CAS heap. If you choose this number too small, it can have a major performance impact. As a very rough guideline, this number should not be smaller than the number of characters in documents you are processing.

Returns:

A new CASMgr object.

createCAS

public static CASMgr createCAS(int initialHeapSize,
                               boolean useJcasCache)

createCAS

public static CASMgr createCAS(int initialHeapSize,
                               TypeSystem ts)

Create a new CASMgr object from a give type system.

Parameters:

initialHeapSize - The initial size of the internal CAS heap. If you choose this number too small, it can have a major performance impact. As a very rough guideline, this number should not be smaller than the number of characters in documents you are processing.

ts - An existing type system (must not be null).

Returns:

A new CASMgr object.

createCAS

public static CASMgr createCAS(int initialHeapSize,
                               TypeSystem ts,
                               boolean useJcasCache)

createCAS

public static CASMgr createCAS(TypeSystem ts)

Create a new CASMgr object from a give type system.

Parameters:

ts - An existing type system (must not be null).

Returns:

A new CASMgr object.

createCAS

public static CASMgr createCAS(TypeSystem ts,
                               boolean useJcasCache)

createTypeSystem

public static TypeSystemMgr createTypeSystem()

Create a new type system that is populated with the built-in CAS types.

Returns:

A type system manager object that can be used to add more types.