Package org.springframework.data.cassandra.repository.query

Class StringBasedCassandraQuery

java.lang.Object

org.springframework.data.cassandra.repository.query.CassandraRepositoryQuerySupport

org.springframework.data.cassandra.repository.query.AbstractCassandraQuery

org.springframework.data.cassandra.repository.query.StringBasedCassandraQuery

All Implemented Interfaces:

RepositoryQuery

public class StringBasedCassandraQuery
extends AbstractCassandraQuery

String-based AbstractCassandraQuery implementation.

A StringBasedCassandraQuery expects a query method to be annotated with Query with a CQL query. String-based queries support named, index-based and expression parameters that are resolved during query execution.

Author:

Matthew Adams, Mark Paluch

See Also:

• Query
• AbstractCassandraQuery

Field Summary

Fields inherited from class org.springframework.data.cassandra.repository.query.CassandraRepositoryQuerySupport

log

Constructor Summary

Constructors

Constructor	Description
StringBasedCassandraQuery(String query, CassandraQueryMethod method, CassandraOperations operations, ExpressionParser expressionParser, QueryMethodEvaluationContextProvider evaluationContextProvider)	Create a new StringBasedCassandraQuery for the given query, CassandraQueryMethod, CassandraOperations, SpelExpressionParser, and QueryMethodEvaluationContextProvider.
StringBasedCassandraQuery(CassandraQueryMethod queryMethod, CassandraOperations operations, ExpressionParser expressionParser, QueryMethodEvaluationContextProvider evaluationContextProvider)	Create a new StringBasedCassandraQuery for the given CassandraQueryMethod, CassandraOperations, SpelExpressionParser, and QueryMethodEvaluationContextProvider.

Method Summary

Modifier and Type	Method	Description
com.datastax.oss.driver.api.core.cql.SimpleStatement	createQuery(CassandraParameterAccessor parameterAccessor)	Creates a Statement using the given ParameterAccessor
protected org.springframework.data.cassandra.repository.query.StringBasedQuery	getStringBasedQuery()
protected boolean	isCountQuery()	Returns whether the query should get a count projection applied.
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.
protected boolean	isModifyingQuery()	Returns whether the query is a modifying query.

Methods inherited from class org.springframework.data.cassandra.repository.query.AbstractCassandraQuery

execute, getOperations

Methods inherited from class org.springframework.data.cassandra.repository.query.CassandraRepositoryQuerySupport

getEntityInstantiators, getMappingContext, getQueryMethod, getQueryStatementCreator

Methods inherited from class java.lang.Object

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

Constructor Details

StringBasedCassandraQuery

public StringBasedCassandraQuery(CassandraQueryMethod queryMethod,
 CassandraOperations operations,
 ExpressionParser expressionParser,
 QueryMethodEvaluationContextProvider evaluationContextProvider)

Create a new StringBasedCassandraQuery for the given CassandraQueryMethod, CassandraOperations, SpelExpressionParser, and QueryMethodEvaluationContextProvider.

Parameters:

queryMethod - CassandraQueryMethod on which this query is based.

operations - CassandraOperations used to perform data access in Cassandra.

expressionParser - SpelExpressionParser used to parse expressions in the query.

evaluationContextProvider - QueryMethodEvaluationContextProvider used to access the potentially shared StandardEvaluationContext.

See Also:

• CassandraQueryMethod
• CassandraOperations

StringBasedCassandraQuery

public StringBasedCassandraQuery(String query,
 CassandraQueryMethod method,
 CassandraOperations operations,
 ExpressionParser expressionParser,
 QueryMethodEvaluationContextProvider evaluationContextProvider)

Create a new StringBasedCassandraQuery for the given query, CassandraQueryMethod, CassandraOperations, SpelExpressionParser, and QueryMethodEvaluationContextProvider.

Parameters:

query - String containing the Apache Cassandra CQL query to execute.

method - CassandraQueryMethod on which this query is based.

operations - CassandraOperations used to perform data access in Cassandra.

expressionParser - SpelExpressionParser used to parse expressions in the query.

evaluationContextProvider - QueryMethodEvaluationContextProvider used to access the potentially shared StandardEvaluationContext.

See Also:

• CassandraQueryMethod
• CassandraOperations

Method Details

getStringBasedQuery

protected org.springframework.data.cassandra.repository.query.StringBasedQuery getStringBasedQuery()

createQuery

public com.datastax.oss.driver.api.core.cql.SimpleStatement createQuery(CassandraParameterAccessor parameterAccessor)

Description copied from class: AbstractCassandraQuery

Creates a Statement using the given ParameterAccessor

Specified by:

createQuery in class AbstractCassandraQuery

Parameters:

parameterAccessor - must not be null.

isCountQuery

protected boolean isCountQuery()

Description copied from class: AbstractCassandraQuery

Returns whether the query should get a count projection applied.

Specified by:

isCountQuery in class AbstractCassandraQuery

Returns:

a boolean value indicating whether the query is a count projection.

isExistsQuery

protected boolean isExistsQuery()

Description copied from class: AbstractCassandraQuery

Returns whether the query should get an exists projection applied.

Specified by:

isExistsQuery in class AbstractCassandraQuery

Returns:

a boolean value indicating whether the query is an exists projection.

isLimiting

protected boolean isLimiting()

Description copied from class: AbstractCassandraQuery

Return whether the query has an explicit limit set.

Specified by:

isLimiting in class AbstractCassandraQuery

Returns:

a boolean value indicating whether the query has an explicit limit set.

isModifyingQuery

protected boolean isModifyingQuery()

Description copied from class: AbstractCassandraQuery

Returns whether the query is a modifying query.

Specified by:

isModifyingQuery in class AbstractCassandraQuery

Returns:

a boolean value indicating whether the query is a modifying query.