Package com.unboundid.ldap.sdk.persist

Class ObjectEncoder

java.lang.Object

com.unboundid.ldap.sdk.persist.ObjectEncoder

All Implemented Interfaces:

java.io.Serializable

Direct Known Subclasses:

DefaultObjectEncoder

@Extensible
@ThreadSafety(level=INTERFACE_THREADSAFE)
public abstract class ObjectEncoder
extends java.lang.Object
implements java.io.Serializable

This class provides an API for converting between Java objects and LDAP attributes. Concrete instances of this class must provide a default zero-argument constructor.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor	Description
ObjectEncoder()

Method Summary

Modifier and Type	Method	Description
AttributeTypeDefinition	constructAttributeType(java.lang.reflect.Field f)	Constructs a definition for an LDAP attribute type which may be added to the directory server schema to allow it to hold the value of the specified field.
abstract AttributeTypeDefinition	constructAttributeType(java.lang.reflect.Field f, OIDAllocator a)	Constructs a definition for an LDAP attribute type which may be added to the directory server schema to allow it to hold the value of the specified field.
AttributeTypeDefinition	constructAttributeType(java.lang.reflect.Method m)	Constructs a definition for an LDAP attribute type which may be added to the directory server schema to allow it to hold the value returned by the specified method.
abstract AttributeTypeDefinition	constructAttributeType(java.lang.reflect.Method m, OIDAllocator a)	Constructs a definition for an LDAP attribute type which may be added to the directory server schema to allow it to hold the value returned by the specified method.
abstract void	decodeField(java.lang.reflect.Field field, java.lang.Object object, Attribute attribute)	Updates the provided object to assign a value for the specified field from the contents of the given attribute.
abstract Attribute	encodeFieldValue(java.lang.reflect.Field field, java.lang.Object value, java.lang.String name)	Encodes the provided field to an LDAP attribute.
abstract Attribute	encodeMethodValue(java.lang.reflect.Method method, java.lang.Object value, java.lang.String name)	Encodes the provided method to an LDAP attribute.
abstract void	invokeSetter(java.lang.reflect.Method method, java.lang.Object object, Attribute attribute)	Updates the provided object to invoke the specified method to set a value from the contents of the given attribute.
void	setNull(java.lang.reflect.Field f, java.lang.Object o)	Assigns a null value to the provided field, if possible.
void	setNull(java.lang.reflect.Method m, java.lang.Object o)	Invokes the provided setter method with a single argument that will set a null value for that method, if possible.
abstract boolean	supportsMultipleValues(java.lang.reflect.Field field)	Indicates whether the provided field can hold multiple values.
abstract boolean	supportsMultipleValues(java.lang.reflect.Method method)	Indicates whether the provided setter method takes an argument that can hold multiple values.
abstract boolean	supportsType(java.lang.reflect.Type t)	Indicates whether this object encoder may be used to encode or decode objects of the specified type.

Methods inherited from class java.lang.Object

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

Constructor Detail

ObjectEncoder

public ObjectEncoder()

Method Detail

supportsType

public abstract boolean supportsType(java.lang.reflect.Type t)

Indicates whether this object encoder may be used to encode or decode objects of the specified type.

Parameters:

t - The type of object for which to make the determination.

Returns:

true if this object encoder may be used for objects of the specified type, or false if not.

constructAttributeType

public final AttributeTypeDefinition constructAttributeType(java.lang.reflect.Field f)
                                                     throws LDAPPersistException

Constructs a definition for an LDAP attribute type which may be added to the directory server schema to allow it to hold the value of the specified field. Note that the object identifier used for the constructed attribute type definition is not required to be valid or unique.

Parameters:

f - The field for which to construct an LDAP attribute type definition. It will include the LDAPField annotation type.

Returns:

The constructed attribute type definition.

Throws:

LDAPPersistException - If this object encoder does not support encoding values for the associated field type.

constructAttributeType

public abstract AttributeTypeDefinition constructAttributeType(java.lang.reflect.Field f,
                                                               OIDAllocator a)
                                                        throws LDAPPersistException

Constructs a definition for an LDAP attribute type which may be added to the directory server schema to allow it to hold the value of the specified field.

Parameters:

f - The field for which to construct an LDAP attribute type definition. It will include the LDAPField annotation type.

a - The OID allocator to use to generate the object identifier. It must not be null.

Returns:

The constructed attribute type definition.

Throws:

LDAPPersistException - If this object encoder does not support encoding values for the associated field type.

constructAttributeType

public final AttributeTypeDefinition constructAttributeType(java.lang.reflect.Method m)
                                                     throws LDAPPersistException

Constructs a definition for an LDAP attribute type which may be added to the directory server schema to allow it to hold the value returned by the specified method. Note that the object identifier used for the constructed attribute type definition is not required to be valid or unique.

Parameters:

m - The method for which to construct an LDAP attribute type definition. It will include the LDAPGetter annotation type.

Returns:

The constructed attribute type definition.

Throws:

LDAPPersistException - If this object encoder does not support encoding values for the associated method type.

constructAttributeType

public abstract AttributeTypeDefinition constructAttributeType(java.lang.reflect.Method m,
                                                               OIDAllocator a)
                                                        throws LDAPPersistException

Constructs a definition for an LDAP attribute type which may be added to the directory server schema to allow it to hold the value returned by the specified method. Note that the object identifier used for the constructed attribute type definition is not required to be valid or unique.

Parameters:

m - The method for which to construct an LDAP attribute type definition. It will include the LDAPGetter annotation type.

a - The OID allocator to use to generate the object identifier. It must not be null.

Returns:

The constructed attribute type definition.

Throws:

LDAPPersistException - If this object encoder does not support encoding values for the associated method type.

supportsMultipleValues

public abstract boolean supportsMultipleValues(java.lang.reflect.Field field)

Indicates whether the provided field can hold multiple values.

Parameters:

field - The field for which to make the determination. It must be marked with the LDAPField annotation.

Returns:

true if the provided field can hold multiple values, or false if not.

supportsMultipleValues

public abstract boolean supportsMultipleValues(java.lang.reflect.Method method)

Indicates whether the provided setter method takes an argument that can hold multiple values.

Parameters:

method - The setter method for which to make the determination. It must be marked with the LDAPSetter annotation type and conform to the constraints associated with that annotation.

Returns:

true if the provided method takes an argument that can hold multiple values, or false if not.

encodeFieldValue

public abstract Attribute encodeFieldValue(java.lang.reflect.Field field,
                                           java.lang.Object value,
                                           java.lang.String name)
                                    throws LDAPPersistException

Encodes the provided field to an LDAP attribute.

Parameters:

field - The field to be encoded.

value - The value for the field in the object to be encoded.

name - The name to use for the constructed attribute.

Returns:

The attribute containing the encoded representation of the provided field.

Throws:

LDAPPersistException - If a problem occurs while attempting to construct an attribute for the field.

encodeMethodValue

public abstract Attribute encodeMethodValue(java.lang.reflect.Method method,
                                            java.lang.Object value,
                                            java.lang.String name)
                                     throws LDAPPersistException

Encodes the provided method to an LDAP attribute.

Parameters:

method - The method to be encoded.

value - The value returned by the method in the object to be encoded.

name - The name to use for the constructed attribute.

Returns:

The attribute containing the encoded representation of the provided method value.

Throws:

LDAPPersistException - If a problem occurs while attempting to construct an attribute for the method.

decodeField

public abstract void decodeField(java.lang.reflect.Field field,
                                 java.lang.Object object,
                                 Attribute attribute)
                          throws LDAPPersistException

Updates the provided object to assign a value for the specified field from the contents of the given attribute.

Parameters:

field - The field to update in the provided object.

object - The object to be updated.

attribute - The attribute whose value(s) should be used to update the specified field in the given object.

Throws:

LDAPPersistException - If a problem occurs while attempting to assign a value to the specified field.

setNull

public void setNull(java.lang.reflect.Field f,
                    java.lang.Object o)
             throws LDAPPersistException

Assigns a null value to the provided field, if possible. If the field type is primitive and cannot be assigned a null value, then a default primitive value will be assigned instead (0 for numeric values, false for boolean values, and the null character for char values).

Parameters:

f - The field to which the null value should be assigned. It must not be null and must be marked with the LDAPField annotation.

o - The object to be updated. It must not be null, and the class must be marked with the annotation.

Throws:

LDAPPersistException - If a problem occurs while attempting to assign a null value to the specified field.

setNull

public void setNull(java.lang.reflect.Method m,
                    java.lang.Object o)
             throws LDAPPersistException

Invokes the provided setter method with a single argument that will set a null value for that method, if possible. If the argument type is and cannot be assigned a null value, then a default primitive value will be assigned instead (0 for numeric values, false for boolean values, and the null character for char values).

Parameters:

m - The setter method that should be used to set the null value. It must not be null, and must have the LDAPSetter annotation.

o - The object to be updated. It must not be null, and the class must be marked with the annotation.

Throws:

LDAPPersistException - If a problem occurs while attempting to assign a null value to the specified field.

invokeSetter

public abstract void invokeSetter(java.lang.reflect.Method method,
                                  java.lang.Object object,
                                  Attribute attribute)
                           throws LDAPPersistException

Updates the provided object to invoke the specified method to set a value from the contents of the given attribute.

Parameters:

method - The method to invoke in the provided object.

object - The object to be updated.

attribute - The attribute whose value(s) should be used to update the specified method in the given object.

Throws:

LDAPPersistException - If a problem occurs while attempting to determine the value or invoke the specified method.