com.unboundid.ldap.sdk.persist

Annotation Type LDAPField

@Documented
 @Retention(value=RUNTIME)
 @Target(value=FIELD)
public @interface LDAPField

This annotation type may be used to mark fields whose values should be persisted in an LDAP directory server. It should only be used for fields in classes that contain the LDAPObject annotation type. Fields marked with this annotation type must be non-final and non-static, but they may have any access modifier (including public, protected, private, or no access modifier at all indicating package-level access). The associated attribute must not be referenced by any other LDAPField annotation types.

Optional Element Summary

Optional Elements

Modifier and Type	Optional Element and Description
java.lang.String	attribute The name of the attribute type in which the associated field will be stored in LDAP entries.
java.lang.String[]	defaultDecodeValue The string representations of the default values to assign to this field if there are no values for the associated attribute in the corresponding LDAP entry being used to initialize the object.
java.lang.String[]	defaultEncodeValue The string representations of the default values to use when adding an entry to the directory if this field has a null value.
java.lang.Class<? extends ObjectEncoder>	encoderClass The class that provides the logic for encoding a field to an LDAP attribute, and for initializing a field from an LDAP attribute.
boolean	failOnInvalidValue Indicates whether attempts to initialize an object should fail if the LDAP attribute has a value that cannot be stored in the associated field.
boolean	failOnTooManyValues Indicates whether attempts to initialize an object should fail if the LDAP attribute has multiple values but the associated field can only hold a single value.
FilterUsage	filterUsage Indicates whether and under what circumstances the value of this field may be included in a search filter generated to search for entries that match the object.
boolean	inAdd Indicates whether this field should be included in the LDAP entry that is generated when adding a new instance of the associated object to the directory.
boolean	inModify Indicates whether this field should be examined and included in the set of LDAP modifications if it has been changed when modifying an existing instance of the associated object in the directory.
boolean	inRDN Indicates whether the value of this field should be included in the RDN of entries created from the associated object.
boolean	lazilyLoad Indicates whether this field should be lazily loaded, which means that the associated attribute will not be retrieved by default so this field will be uninitialized.
java.lang.String[]	objectClass The names of the object classes in which the associated attribute may be used.
boolean	requiredForDecode Indicates whether this field is required to be assigned a value in decode processing.
boolean	requiredForEncode Indicates whether this field is required to have a value for encode processing.

Element Detail

failOnInvalidValue

public abstract boolean failOnInvalidValue

Indicates whether attempts to initialize an object should fail if the LDAP attribute has a value that cannot be stored in the associated field. If this is true, then an exception will be thrown in such instances. If this is false, then the field will remain uninitialized, and attempts to modify the corresponding entry in the directory may cause the existing values to be lost.

Returns:

true if attempts to initialize an object should fail if the LDAP attribute has a value that cannot be stored in the associated field, or false if not.

Default:

true

failOnTooManyValues

public abstract boolean failOnTooManyValues

Indicates whether attempts to initialize an object should fail if the LDAP attribute has multiple values but the associated field can only hold a single value. If this is true, then an exception will be thrown in such instances. If this is false, then only the first value returned will be used, and attempts to modify the corresponding entry in the directory may cause those additional values to be lost.

Returns:

true if attempts to initialize an object should fail if the LDAP attribute has multiple values but the associated field can only hold a single value, or false if not.

Default:

true

inAdd

public abstract boolean inAdd

Indicates whether this field should be included in the LDAP entry that is generated when adding a new instance of the associated object to the directory. Note that any field which is to be included in entry RDNs will always be included in add operations regardless of the value of this element.

Returns:

true if this field should be included in the LDAP entry that is generated when adding a new instance of the associated object to the directory, or false if not.

Default:

true

inModify

public abstract boolean inModify

Indicates whether this field should be examined and included in the set of LDAP modifications if it has been changed when modifying an existing instance of the associated object in the directory. Note that any field which is to be included in entry RDNs will never be included in modify operations regardless of the value of this element.

Returns:

true if this field should be examined and included in the set of LDAP modifications if it has been changed, or false if not.

Default:

true

inRDN

public abstract boolean inRDN

Indicates whether the value of this field should be included in the RDN of entries created from the associated object. Any field which is to be included entry RDNs will be considered required for add operations regardless of the value of the requiredForEncode() element of this annotation type, and will be included in add operations regardless of the value of the inAdd() element.

When generating an entry DN, the persistence framework will construct an RDN using all fields marked with LDAPField that have inRDN=true and all getter methods marked with LDAPGetter that have inRDN=true. A class marked with LDAPObject must either have at least one LDAPField or LDAPGetter with inRDN=true, or it must be a direct subclass of another class marked with LDAPObject. If a class has one or more fields and/or getters with inRDN=true, then only those fields/getters will be used to construct the RDN, even if that class is a direct subclass of another class marked with LDAPObject.

Returns:

true if the value of this field should be included in the RDN of entries created from the associated object, or false if not.

Default:

false

lazilyLoad

public abstract boolean lazilyLoad

Indicates whether this field should be lazily loaded, which means that the associated attribute will not be retrieved by default so this field will be uninitialized. This may be useful for attributes which are not always needed and that may be expensive to retrieve or could require a lot of memory to hold. The contents of such fields may be loaded on demand if their values are needed. Fields marked for lazy loading will never be considered required for decoding, and they must not be given default values or marked for inclusion in entry RDNs.

Returns:

true if this field should be lazily loaded, or false if not.

Default:

false

requiredForDecode

public abstract boolean requiredForDecode

Indicates whether this field is required to be assigned a value in decode processing. If this is true, then attempts to initialize a Java object from an LDAP entry which does not contain a value for the associated attribute will result in an exception.

Returns:

true if this field is required to be assigned a value in decode processing, or false if not.

Default:

false

requiredForEncode

public abstract boolean requiredForEncode

Indicates whether this field is required to have a value for encode processing. If this is true, then attempts to construct an entry or set of modifications for an object that does not have a value for this field will result in an exception.

Returns:

true if this field is required to have a value for encode processing, or false if not.

Default:

false

encoderClass

@NotNull
public abstract java.lang.Class<? extends ObjectEncoder> encoderClass

The class that provides the logic for encoding a field to an LDAP attribute, and for initializing a field from an LDAP attribute.

Returns:

The encoder class for the field.

Default:

com.unboundid.ldap.sdk.persist.DefaultObjectEncoder.class

filterUsage

@NotNull
public abstract FilterUsage filterUsage

Indicates whether and under what circumstances the value of this field may be included in a search filter generated to search for entries that match the object.

Returns:

The filter usage value for this field.

Default:

com.unboundid.ldap.sdk.persist.FilterUsage.CONDITIONALLY_ALLOWED

attribute

@NotNull
public abstract java.lang.String attribute

The name of the attribute type in which the associated field will be stored in LDAP entries. If no value is provided, then it will be assumed that the LDAP attribute name matches the name of the associated field.

Returns:

The name of the attribute type in which the associated field will be stored in LDAP entries, or an empty string if the attribute name should match the name of the associated field.

Default:

""

defaultDecodeValue

@NotNull
public abstract java.lang.String[] defaultDecodeValue

The string representations of the default values to assign to this field if there are no values for the associated attribute in the corresponding LDAP entry being used to initialize the object. If no default values are defined, then an exception will be thrown if the field is requiredForEncode(), or the field will be set to null if it is not required.

Returns:

The string representations of the default values to assign to this field if there are no values for the associated attribute in the corresponding LDAP entry, or an empty array if there should not be any default values.

Default:

{}

defaultEncodeValue

@NotNull
public abstract java.lang.String[] defaultEncodeValue

The string representations of the default values to use when adding an entry to the directory if this field has a null value.

Returns:

The string representations of the default values to use when adding an entry to the directory if this field has a null value, or an empty array if there should not be any default values.

Default:

{}

objectClass

@NotNull
public abstract java.lang.String[] objectClass

The names of the object classes in which the associated attribute may be used. This is primarily intended for use in generating LDAP schema from Java object types.

Values may include any combination of the structural and/or auxiliary object classes named in the LDAPObject annotation type for the associated class. If no values are provided, then it will be assumed to be only included in the structural object class.

Returns:

The names of the object classes in which the associated attribute may be used, or an empty array if it should be assumed to only be included in the structural object class.

Default:

{}