# Class ClassDescriptorMap

java.lang.Object
org.apache.cayenne.reflect.ClassDescriptorMap

public class ClassDescriptorMap extends Object
An object that holds class descriptors for mapped entities, compiling new descriptors on demand using an internal chain of descriptor factories. Note that the object is not synchronized internally, so it has to be prefilled with descriptors by the caller on initialization via calling 'getDescriptor' for all mapped entities.

Since:
  3.0

- ## Field Summary

  Fields
  Modifier and Type
  Field
  Description
  `protected Map<String, ClassDescriptor>`
  `descriptors`
  `protected List<ClassDescriptorFactory>`
  `factories`
  `protected EntityResolver`
  `resolver`

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `ClassDescriptorMap(EntityResolver resolver)`

- ## Method Summary

  Modifier and Type
  Method
  Description
  `void`
  `addDescriptor(String entityName, ClassDescriptor descriptor)`
  Caches descriptor definition.
  `void`
  `addFactory(ClassDescriptorFactory factory)`
  Adds a factory to the descriptor factory chain.
  `void`
  `clearDescriptors()`
  `void`
  `clearFactories()`
  `protected ClassDescriptor`
  `createDescriptor(String entityName)`
  Creates a new descriptor.
  `protected ClassDescriptor`
  `createProxyDescriptor(String entityName)`
  Creates a descriptor wrapper that will compile the underlying descriptor on demand.
  `ClassDescriptor`
  `getDescriptor(String entityName)`
  `EntityResolver`
  `getResolver()`
  `void`
  `removeDescriptor(String entityName)`
  Removes cached descriptor if any for the given entity.
  `void`
  `removeFactory(ClassDescriptorFactory factory)`

  ### Methods inherited from class Object

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

- ## Field Details

  - ### resolver

    protected EntityResolver resolver

  - ### descriptors

    protected Map<String, ClassDescriptor> descriptors

  - ### factories

    protected List<ClassDescriptorFactory> factories

- ## Constructor Details

  - ### ClassDescriptorMap

    public ClassDescriptorMap(EntityResolver resolver)

- ## Method Details

  - ### getResolver

    public EntityResolver getResolver()

  - ### addFactory

    public void addFactory(ClassDescriptorFactory factory)
    Adds a factory to the descriptor factory chain.

  - ### removeFactory

    public void removeFactory(ClassDescriptorFactory factory)

  - ### clearFactories

    public void clearFactories()

  - ### clearDescriptors

    public void clearDescriptors()

  - ### removeDescriptor

    public void removeDescriptor(String entityName)
    Removes cached descriptor if any for the given entity.

  - ### addDescriptor

    public void addDescriptor(String entityName, ClassDescriptor descriptor)
    Caches descriptor definition.

  - ### getDescriptor

    public ClassDescriptor getDescriptor(String entityName)

  - ### createProxyDescriptor

    protected ClassDescriptor createProxyDescriptor(String entityName)
    Creates a descriptor wrapper that will compile the underlying descriptor on demand. Using proxy indirection is needed to compile relationships of descriptors to other descriptors that are not compiled yet.

  - ### createDescriptor

    protected ClassDescriptor createDescriptor(String entityName)
    Creates a new descriptor.