io.micronaut.data.model.query.builder.jpa

Class JpaQueryBuilder

java.lang.Object

io.micronaut.data.model.query.builder.AbstractSqlLikeQueryBuilder

io.micronaut.data.model.query.builder.jpa.JpaQueryBuilder

All Implemented Interfaces:

QueryBuilder

@Internal
public class JpaQueryBuilder
extends AbstractSqlLikeQueryBuilder
implements QueryBuilder

Builds JPA 1.0 String-based queries from the Query model.

Since:

1.0

Author:

Graeme Rocher

Nested Class Summary

Nested classes/interfaces inherited from class io.micronaut.data.model.query.builder.AbstractSqlLikeQueryBuilder

AbstractSqlLikeQueryBuilder.Placeholder, AbstractSqlLikeQueryBuilder.PropertyPath, AbstractSqlLikeQueryBuilder.QueryHandler, AbstractSqlLikeQueryBuilder.QueryState

Field Summary

Fields inherited from class io.micronaut.data.model.query.builder.AbstractSqlLikeQueryBuilder

AS_CLAUSE, CLOSE_BRACKET, COMMA, DELETE_CLAUSE, DOT, FROM_CLAUSE, FUNCTION_COUNT, LOGICAL_AND, LOGICAL_OR, NOT_CLAUSE, OPEN_BRACKET, ORDER_BY_CLAUSE, queryHandlers, SELECT_CLAUSE, SPACE, UPDATE_CLAUSE, WHERE_CLAUSE

Constructor Summary

Constructors

Constructor and Description
JpaQueryBuilder() Default constructor.

Method Summary

Modifier and Type	Method and Description
protected java.lang.StringBuilder	appendDeleteClause(java.lang.StringBuilder queryString) Append the delete clause.
protected void	appendProjectionRowCount(java.lang.StringBuilder queryString, java.lang.String logicalName) Appends a row count projection to the query string.
QueryResult	buildInsert(io.micronaut.core.annotation.AnnotationMetadata repositoryMetadata, PersistentEntity entity) Builds an insert statement for the given entity.
protected java.lang.String[]	buildJoin(java.lang.String alias, JoinPath joinPath, java.lang.String joinType, java.lang.StringBuilder target, java.util.Map<java.lang.String,java.lang.String> appliedJoinPaths) Build a join expression for the given alias, association, join type and builder.
QueryResult	buildPagination(Pageable pageable) Encode the pageable.
protected boolean	computePropertyPaths() Whether property path expressions require computation by the implementation.
protected AbstractSqlLikeQueryBuilder.Placeholder	formatParameter(int index) Format the parameter at the given index.
java.lang.String	getAliasName(PersistentEntity entity) Get an alias name for the given entity.
protected java.lang.String	getColumnName(PersistentProperty persistentProperty) Get the column name for the given property.
protected java.lang.String	getTableName(PersistentEntity entity) Get the table name for the given entity.
protected boolean	isAliasForBatch() Should aliases be used in batch statements.
java.lang.String	resolveJoinType(Join.Type jt) Resolves the join type.
protected void	selectAllColumns(AbstractSqlLikeQueryBuilder.QueryState queryState) Obtain the string that selects all columns from the entity.

Methods inherited from class io.micronaut.data.model.query.builder.AbstractSqlLikeQueryBuilder

buildDelete, buildOrderBy, buildQuery, buildUpdate, encodeInExpression, getAliasName, getPathOnlyAliasName, getTableAsKeyword, handleSubQuery

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.micronaut.data.model.query.builder.QueryBuilder

buildDelete, buildOrderBy, buildQuery, buildUpdate, newQueryBuilder

Constructor Detail

JpaQueryBuilder

public JpaQueryBuilder()

Default constructor.

Method Detail

getAliasName

public java.lang.String getAliasName(PersistentEntity entity)

Description copied from class: AbstractSqlLikeQueryBuilder

Get an alias name for the given entity.

Overrides:

getAliasName in class AbstractSqlLikeQueryBuilder

Parameters:

entity - The entity

Returns:

The alias name

buildJoin

protected java.lang.String[] buildJoin(java.lang.String alias,
                                       JoinPath joinPath,
                                       java.lang.String joinType,
                                       java.lang.StringBuilder target,
                                       java.util.Map<java.lang.String,java.lang.String> appliedJoinPaths)

Description copied from class: AbstractSqlLikeQueryBuilder

Build a join expression for the given alias, association, join type and builder.

Specified by:

buildJoin in class AbstractSqlLikeQueryBuilder

Parameters:

alias - The alias

joinPath - The join path

joinType - The join type string

target - The target builder

appliedJoinPaths - The applied joins paths

Returns:

An array representing the aliases for each join association in the specified join path

getTableName

protected java.lang.String getTableName(PersistentEntity entity)

Description copied from class: AbstractSqlLikeQueryBuilder

Get the table name for the given entity.

Specified by:

getTableName in class AbstractSqlLikeQueryBuilder

Parameters:

entity - The entity

Returns:

The table name

getColumnName

protected java.lang.String getColumnName(PersistentProperty persistentProperty)

Description copied from class: AbstractSqlLikeQueryBuilder

Get the column name for the given property.

Specified by:

getColumnName in class AbstractSqlLikeQueryBuilder

Parameters:

persistentProperty - The property

Returns:

The column name

selectAllColumns

protected void selectAllColumns(AbstractSqlLikeQueryBuilder.QueryState queryState)

Description copied from class: AbstractSqlLikeQueryBuilder

Obtain the string that selects all columns from the entity.

Specified by:

selectAllColumns in class AbstractSqlLikeQueryBuilder

Parameters:

queryState - The query state

appendProjectionRowCount

protected void appendProjectionRowCount(java.lang.StringBuilder queryString,
                                        java.lang.String logicalName)

Description copied from class: AbstractSqlLikeQueryBuilder

Appends a row count projection to the query string.

Specified by:

appendProjectionRowCount in class AbstractSqlLikeQueryBuilder

Parameters:

queryString - The query string

logicalName - The alias to the table name

computePropertyPaths

protected final boolean computePropertyPaths()

Description copied from class: AbstractSqlLikeQueryBuilder

Whether property path expressions require computation by the implementation. In a certain query dialects property paths are supported (such as JPA-QL where you can do select foo.bar) whilst for explicit SQL queries paths like this have to be computed into aliases / column name references.

Specified by:

computePropertyPaths in class AbstractSqlLikeQueryBuilder

Returns:

True if property path computation is required.

isAliasForBatch

protected boolean isAliasForBatch()

Description copied from class: AbstractSqlLikeQueryBuilder

Should aliases be used in batch statements.

Specified by:

isAliasForBatch in class AbstractSqlLikeQueryBuilder

Returns:

True if they should

formatParameter

protected AbstractSqlLikeQueryBuilder.Placeholder formatParameter(int index)

Description copied from class: AbstractSqlLikeQueryBuilder

Format the parameter at the given index.

Specified by:

formatParameter in class AbstractSqlLikeQueryBuilder

Parameters:

index - The parameter

Returns:

The index

resolveJoinType

public java.lang.String resolveJoinType(Join.Type jt)

Description copied from class: AbstractSqlLikeQueryBuilder

Resolves the join type.

Specified by:

resolveJoinType in class AbstractSqlLikeQueryBuilder

Parameters:

jt - The join type

Returns:

The join type.

buildInsert

@Nullable
public QueryResult buildInsert(io.micronaut.core.annotation.AnnotationMetadata repositoryMetadata,
                                         PersistentEntity entity)

Description copied from interface: QueryBuilder

Builds an insert statement for the given entity.

Specified by:

buildInsert in interface QueryBuilder

Parameters:

repositoryMetadata - The repository annotation metadata

entity - The entity

Returns:

The insert statement or null if the implementation doesn't require insert statements

appendDeleteClause

@NonNull
protected java.lang.StringBuilder appendDeleteClause(java.lang.StringBuilder queryString)

Description copied from class: AbstractSqlLikeQueryBuilder

Append the delete clause.

Overrides:

appendDeleteClause in class AbstractSqlLikeQueryBuilder

Parameters:

queryString - The query string

Returns:

The delete clause

buildPagination

@NonNull
public QueryResult buildPagination(@NonNull
                                            Pageable pageable)

Description copied from interface: QueryBuilder

Encode the pageable.

Specified by:

buildPagination in interface QueryBuilder

Parameters:

pageable - The pageable

Returns:

The encoded query