org.elasticsearch.action.search

列挙型 SearchType

java.lang.Object

java.lang.Enum<SearchType>

org.elasticsearch.action.search.SearchType

すべての実装されたインタフェース:

Serializable, Comparable<SearchType>

public enum SearchType
extends Enum<SearchType>

Search type represent the manner at which the search operation is executed.

列挙型定数のサマリー

列挙型定数

列挙型定数と説明
COUNT 非推奨です。 does not any improvements compared to QUERY_THEN_FETCH with a `size` of 0
DFS_QUERY_AND_FETCH Same as QUERY_AND_FETCH, except for an initial scatter phase which goes and computes the distributed term frequencies for more accurate scoring.
DFS_QUERY_THEN_FETCH Same as QUERY_THEN_FETCH, except for an initial scatter phase which goes and computes the distributed term frequencies for more accurate scoring.
QUERY_AND_FETCH The most naive (and possibly fastest) implementation is to simply execute the query on all relevant shards and return the results.
QUERY_THEN_FETCH The query is executed against all shards, but only enough information is returned (not the document content).
SCAN 非推奨です。 will be removed in 3.0, you should do a regular scroll instead, ordered by `_doc`

フィールドのサマリー

フィールド

修飾子とタイプ	フィールドと説明
static SearchType	DEFAULT The default search type (QUERY_THEN_FETCH.

メソッドのサマリー

修飾子とタイプ	メソッドと説明
static SearchType	fromId(byte id) Constructs search type based on the internal id.
static SearchType	fromString(String searchType, ParseFieldMatcher parseFieldMatcher) The a string representation search type to execute, defaults to DEFAULT.
byte	id() The internal id of the type.
static SearchType	valueOf(String name) 指定した名前を持つこの型の列挙型定数を返します。
static SearchType[]	values() この列挙型の定数を含む配列を宣言されている順序で返します。

クラスから継承されたメソッド java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

クラスから継承されたメソッド java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

列挙型定数の詳細

DFS_QUERY_THEN_FETCH

public static final SearchType DFS_QUERY_THEN_FETCH

Same as QUERY_THEN_FETCH, except for an initial scatter phase which goes and computes the distributed term frequencies for more accurate scoring.

QUERY_THEN_FETCH

public static final SearchType QUERY_THEN_FETCH

The query is executed against all shards, but only enough information is returned (not the document content). The results are then sorted and ranked, and based on it, only the relevant shards are asked for the actual document content. The return number of hits is exactly as specified in size, since they are the only ones that are fetched. This is very handy when the index has a lot of shards (not replicas, shard id groups).

DFS_QUERY_AND_FETCH

public static final SearchType DFS_QUERY_AND_FETCH

Same as QUERY_AND_FETCH, except for an initial scatter phase which goes and computes the distributed term frequencies for more accurate scoring.

QUERY_AND_FETCH

public static final SearchType QUERY_AND_FETCH

The most naive (and possibly fastest) implementation is to simply execute the query on all relevant shards and return the results. Each shard returns size results. Since each shard already returns size hits, this type actually returns size times number of shards results back to the caller.

SCAN

@Deprecated
public static final SearchType SCAN

非推奨です。 will be removed in 3.0, you should do a regular scroll instead, ordered by `_doc`

Performs scanning of the results which executes the search without any sorting. It will automatically start scrolling the result set.

COUNT

@Deprecated
public static final SearchType COUNT

非推奨です。 does not any improvements compared to QUERY_THEN_FETCH with a `size` of 0

Only counts the results, will still execute aggregations and the like.

フィールドの詳細

DEFAULT

public static final SearchType DEFAULT

The default search type (QUERY_THEN_FETCH.

メソッドの詳細

values

public static SearchType[] values()

この列挙型の定数を含む配列を宣言されている順序で返します。 このメソッドは次のようにして定数を反復するために 使用できます:

for(SearchType c: SearchType.values())
  System.out.println(c);

戻り値:

この列挙型の定数を含む、宣言されている順序での配列

valueOf

public static SearchType valueOf(String name)

指定した名前を持つこの型の列挙型定数を返します。 文字列は、この型の列挙型定数を宣言するのに使用した識別子と正確に 一致している必要があります。 (余分な空白文字を含めることはできません。)

パラメータ:

name - 返される列挙型定数の名前。

戻り値:

指定した名前の列挙型定数

例外:

IllegalArgumentException - この列挙型に、指定した名前の定数がない場合

NullPointerException - 引数がnullの場合

id

public byte id()

The internal id of the type.

fromId

public static SearchType fromId(byte id)

Constructs search type based on the internal id.

fromString

public static SearchType fromString(String searchType,
                                    ParseFieldMatcher parseFieldMatcher)

The a string representation search type to execute, defaults to DEFAULT. Can be one of "dfs_query_then_fetch"/"dfsQueryThenFetch", "dfs_query_and_fetch"/"dfsQueryAndFetch", "query_then_fetch"/"queryThenFetch", "query_and_fetch"/"queryAndFetch", and "scan".