程序包 dev.langchain4j.store.embedding.filter

接口 Filter

所有已知实现类:

And, IsEqualTo, IsGreaterThan, IsGreaterThanOrEqualTo, IsIn, IsLessThan, IsLessThanOrEqualTo, IsNotEqualTo, IsNotIn, Not, Or

public interface Filter

This class represents a filter that can be applied during search in an EmbeddingStore.
Many EmbeddingStores support a feature called metadata filtering. A Filter can be used for this.
A Filter object can represent simple (e.g. type = 'documentation') and composite (e.g. type = 'documentation' AND year > 2020) filter expressions in an EmbeddingStore-agnostic way.
Each EmbeddingStore implementation that supports metadata filtering is mapping Filter into it's native filter expression.

另请参阅:

• IsEqualTo
• IsNotEqualTo
• IsGreaterThan
• IsGreaterThanOrEqualTo
• IsLessThan
• IsLessThanOrEqualTo
• IsIn
• IsNotIn
• And
• Not
• Or

方法概要

修饰符和类型	方法	说明
default Filter	and(Filter filter)
static Filter	and(Filter left, Filter right)
static Filter	not(Filter expression)
default Filter	or(Filter filter)
static Filter	or(Filter left, Filter right)
boolean	test(Object object)	Tests if a given object satisfies this Filter.

方法详细资料

test

boolean test(Object object)

Tests if a given object satisfies this Filter.

参数:

object - An object to test.

返回:

true if a given object satisfies this Filter, false otherwise.

and

default Filter and(Filter filter)

and

static Filter and(Filter left,
 Filter right)

or

default Filter or(Filter filter)

or

static Filter or(Filter left,
 Filter right)

not

static Filter not(Filter expression)