org.apache.lucene.document
Enum FieldSelectorResult

java.lang.Object
  extended by java.lang.Enum<FieldSelectorResult>
      extended by org.apache.lucene.document.FieldSelectorResult
All Implemented Interfaces:
Serializable, Comparable<FieldSelectorResult>

public enum FieldSelectorResult
extends Enum<FieldSelectorResult>

Provides information about what should be done with this Field


Enum Constant Summary
LATENT
          Lazily load this Field, but do not cache the result.
LAZY_LOAD
          Lazily load this Field.
LOAD
          Load this Field every time the Document is loaded, reading in the data as it is encountered.
LOAD_AND_BREAK
          Load this field as in the LOAD case, but immediately return from Field loading for the Document.
NO_LOAD
          Do not load the Field.
SIZE
          Expert: Load the size of this Field rather than its value.
SIZE_AND_BREAK
          Expert: Like SIZE but immediately break from the field loading loop, i.e., stop loading further fields, after the size is loaded
 
Method Summary
static FieldSelectorResult valueOf(String name)
          Returns the enum constant of this type with the specified name.
static FieldSelectorResult[] values()
          Returns an array containing the constants of this enum type, in the order they are declared.
 
Methods inherited from class java.lang.Enum
clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf
 
Methods inherited from class java.lang.Object
getClass, notify, notifyAll, wait, wait, wait
 

Enum Constant Detail

LOAD

public static final FieldSelectorResult LOAD
Load this Field every time the Document is loaded, reading in the data as it is encountered. Document.getField(String) and Document.getFieldable(String) should not return null.

Document.add(Fieldable) should be called by the Reader.


LAZY_LOAD

public static final FieldSelectorResult LAZY_LOAD
Lazily load this Field. This means the Field is valid, but it may not actually contain its data until invoked. Document.getField(String) SHOULD NOT BE USED. Document.getFieldable(String) is safe to use and should return a valid instance of a Fieldable.

Document.add(Fieldable) should be called by the Reader.


NO_LOAD

public static final FieldSelectorResult NO_LOAD
Do not load the Field. Document.getField(String) and Document.getFieldable(String) should return null. Document.add(Fieldable) is not called.

Document.add(Fieldable) should not be called by the Reader.


LOAD_AND_BREAK

public static final FieldSelectorResult LOAD_AND_BREAK
Load this field as in the LOAD case, but immediately return from Field loading for the Document. Thus, the Document may not have its complete set of Fields. Document.getField(String) and Document.getFieldable(String) should both be valid for this Field

Document.add(Fieldable) should be called by the Reader.


SIZE

public static final FieldSelectorResult SIZE
Expert: Load the size of this Field rather than its value. Size is measured as number of bytes required to store the field == bytes for a binary or any compressed value, and 2*chars for a String value. The size is stored as a binary value, represented as an int in a byte[], with the higher order byte first in [0]


SIZE_AND_BREAK

public static final FieldSelectorResult SIZE_AND_BREAK
Expert: Like SIZE but immediately break from the field loading loop, i.e., stop loading further fields, after the size is loaded


LATENT

public static final FieldSelectorResult LATENT
Lazily load this Field, but do not cache the result. This means the Field is valid, but it may not actually contain its data until invoked. Document.getField(String) SHOULD NOT BE USED. Document.getFieldable(String) is safe to use and should return a valid instance of a Fieldable.

Document.add(Fieldable) should be called by the Reader.

Method Detail

values

public static FieldSelectorResult[] values()
Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:
for (FieldSelectorResult c : FieldSelectorResult.values())
    System.out.println(c);

Returns:
an array containing the constants of this enum type, in the order they are declared

valueOf

public static FieldSelectorResult valueOf(String name)
Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:
name - the name of the enum constant to be returned.
Returns:
the enum constant with the specified name
Throws:
IllegalArgumentException - if this enum type has no constant with the specified name
NullPointerException - if the argument is null


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