Package org.springframework.data.mongodb.repository.query

Class StringBasedAggregation

java.lang.Object

org.springframework.data.mongodb.repository.query.AbstractMongoQuery

org.springframework.data.mongodb.repository.query.StringBasedAggregation

All Implemented Interfaces:

org.springframework.data.repository.query.RepositoryQuery

public class StringBasedAggregation
extends AbstractMongoQuery

AbstractMongoQuery implementation to run string-based aggregations using Aggregation.

Since:

2.2

Author:

Christoph Strobl, Divya Srivastava, Mark Paluch

Constructor Summary

Constructors

Constructor	Description
StringBasedAggregation(MongoQueryMethod method, MongoOperations mongoOperations, org.springframework.expression.ExpressionParser expressionParser, org.springframework.data.repository.query.QueryMethodEvaluationContextProvider evaluationContextProvider)	Creates a new StringBasedAggregation from the given MongoQueryMethod and MongoOperations.

Method Summary

Modifier and Type	Method	Description
protected Query	createQuery(ConvertingParameterAccessor accessor)	Creates a Query instance using the given ParameterAccessor
protected Object	doExecute(MongoQueryMethod method, org.springframework.data.repository.query.ResultProcessor resultProcessor, ConvertingParameterAccessor accessor, Class<?> typeToRead)	Execute the RepositoryQuery of the given method with the parameters provided by the accessor
protected boolean	isCountQuery()	Returns whether the query should get a count projection applied.
protected boolean	isDeleteQuery()	Return weather the query should delete matching documents.
protected boolean	isExistsQuery()	Returns whether the query should get an exists projection applied.
protected boolean	isLimiting()	Return whether the query has an explicit limit set.

Methods inherited from class org.springframework.data.mongodb.repository.query.AbstractMongoQuery

createCountQuery, createUpdate, decode, execute, getCodecRegistry, getParameterBindingCodec, getQueryMethod, getSpELExpressionEvaluatorFor, parseAggregationPipeline, prepareBindingContext

Methods inherited from class java.lang.Object

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

Constructor Details

StringBasedAggregation

public StringBasedAggregation(MongoQueryMethod method,
 MongoOperations mongoOperations,
 org.springframework.expression.ExpressionParser expressionParser,
 org.springframework.data.repository.query.QueryMethodEvaluationContextProvider evaluationContextProvider)

Creates a new StringBasedAggregation from the given MongoQueryMethod and MongoOperations.

Parameters:

method - must not be null.

mongoOperations - must not be null.

expressionParser - must not be null.

evaluationContextProvider - must not be null.

Method Details

doExecute

@Nullable
protected Object doExecute(MongoQueryMethod method,
 org.springframework.data.repository.query.ResultProcessor resultProcessor,
 ConvertingParameterAccessor accessor,
 Class<?> typeToRead)

Description copied from class: AbstractMongoQuery

Execute the RepositoryQuery of the given method with the parameters provided by the accessor

Overrides:

doExecute in class AbstractMongoQuery

Parameters:

method - the MongoQueryMethod invoked. Never null.

resultProcessor - ResultProcessor for post procession. Never null.

accessor - for providing invocation arguments. Never null.

typeToRead - the desired component target type. Can be null.

createQuery

protected Query createQuery(ConvertingParameterAccessor accessor)

Description copied from class: AbstractMongoQuery

Creates a Query instance using the given ParameterAccessor

Specified by:

createQuery in class AbstractMongoQuery

Parameters:

accessor - must not be null.

Returns:

isCountQuery

protected boolean isCountQuery()

Description copied from class: AbstractMongoQuery

Returns whether the query should get a count projection applied.

Specified by:

isCountQuery in class AbstractMongoQuery

Returns:

isExistsQuery

protected boolean isExistsQuery()

Description copied from class: AbstractMongoQuery

Returns whether the query should get an exists projection applied.

Specified by:

isExistsQuery in class AbstractMongoQuery

Returns:

isDeleteQuery

protected boolean isDeleteQuery()

Description copied from class: AbstractMongoQuery

Return weather the query should delete matching documents.

Specified by:

isDeleteQuery in class AbstractMongoQuery

Returns:

isLimiting

protected boolean isLimiting()

Description copied from class: AbstractMongoQuery

Return whether the query has an explicit limit set.

Specified by:

isLimiting in class AbstractMongoQuery

Returns: