org.apache.lucene.document

Enum FieldSelectorResult

java.lang.Object

java.lang.Enum<FieldSelectorResult>

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

Enum Constants

Enum Constant and Description
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

Methods

Modifier and Type	Method and Description
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, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

finalize, 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