Package io.milvus.param.dml

Class QueryParam.Builder

java.lang.Object

io.milvus.param.dml.QueryParam.Builder

Enclosing class:

QueryParam

public static class QueryParam.Builder
extends Object

Builder for QueryParam class.

Method Summary

Modifier and Type	Method	Description
QueryParam.Builder	addOutField(String fieldName)	Specifies an output field (Optional).
QueryParam.Builder	addPartitionName(String partitionName)	Adds a partition to specify query scope (Optional).
QueryParam	build()	Verifies parameters and creates a new QueryParam instance.
QueryParam.Builder	withCollectionName(String collectionName)	Sets the collection name.
QueryParam.Builder	withConsistencyLevel(ConsistencyLevelEnum consistencyLevel)	ConsistencyLevel of consistency level.
QueryParam.Builder	withDatabaseName(String databaseName)	Sets the database name.
QueryParam.Builder	withExpr(String expr)	Sets the expression to query entities.
QueryParam.Builder	withIgnoreGrowing(Boolean ignoreGrowing)	Ignore the growing segments to get best query performance.
QueryParam.Builder	withLimit(Long limit)	Specify a value to control the returned number of entities.
QueryParam.Builder	withOffset(Long offset)	Specify a position to return results.
QueryParam.Builder	withOutFields(List<String> outFields)	Specifies output fields (Optional).
QueryParam.Builder	withPartitionNames(List<String> partitionNames)	Sets partition names list to specify query scope (Optional).

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

withDatabaseName

public QueryParam.Builder withDatabaseName(String databaseName)

Sets the database name. database name can be nil.

Parameters:

databaseName - database name

Returns:

Builder

withCollectionName

public QueryParam.Builder withCollectionName(String collectionName)

Sets the collection name. Collection name cannot be empty or null.

Parameters:

collectionName - collection name

Returns:

Builder

withConsistencyLevel

public QueryParam.Builder withConsistencyLevel(ConsistencyLevelEnum consistencyLevel)

ConsistencyLevel of consistency level.

Parameters:

consistencyLevel - consistency level

Returns:

Builder

withPartitionNames

public QueryParam.Builder withPartitionNames(List<String> partitionNames)

Sets partition names list to specify query scope (Optional).

Parameters:

partitionNames - partition names list

Returns:

Builder

addPartitionName

public QueryParam.Builder addPartitionName(String partitionName)

Adds a partition to specify query scope (Optional).

Parameters:

partitionName - partition name

Returns:

Builder

withOutFields

public QueryParam.Builder withOutFields(List<String> outFields)

Specifies output fields (Optional).

Parameters:

outFields - output fields

Returns:

Builder

addOutField

public QueryParam.Builder addOutField(String fieldName)

Specifies an output field (Optional).

Parameters:

fieldName - field name

Returns:

Builder

withExpr

public QueryParam.Builder withExpr(String expr)

Sets the expression to query entities.

Parameters:

expr - filtering expression

Returns:

Builder

See Also:

Boolean Expression Rules

withOffset

public QueryParam.Builder withOffset(Long offset)

Specify a position to return results. Only take effect when the 'limit' value is specified. Default value is 0, start from begin.

Parameters:

offset - a value to define the position

Returns:

Builder

withLimit

public QueryParam.Builder withLimit(Long limit)

Specify a value to control the returned number of entities. Must be a positive value. Default value is 0, will return without limit.

Parameters:

limit - a value to define the limit of returned entities

Returns:

Builder

withIgnoreGrowing

public QueryParam.Builder withIgnoreGrowing(Boolean ignoreGrowing)

Ignore the growing segments to get best query performance. Default is False. For the user case that don't require data visibility.

Parameters:

ignoreGrowing - Boolean.TRUE ignore, Boolean.FALSE is not

Returns:

Builder

build

public QueryParam build()
                 throws ParamException

Verifies parameters and creates a new QueryParam instance.

Returns:

QueryParam

Throws:

ParamException