sirius.db.jdbc

Class SmartQuery.Compiler

java.lang.Object

sirius.db.jdbc.SmartQuery.Compiler

Enclosing class:

SmartQuery<E extends SQLEntity>

public static class SmartQuery.Compiler
extends Object

Represents the compiler which is used to generate SQL statements based on a SmartQuery.

Field Summary

Fields

Modifier and Type	Field and Description
protected AtomicInteger	aliasCounter
protected String	defaultAlias
protected EntityDescriptor	ed
protected StringBuilder	joins
protected Map<String,sirius.kernel.commons.Tuple<String,EntityDescriptor>>	joinTable
protected List<Object>	parameters
protected StringBuilder	postJoinQuery
protected StringBuilder	preJoinQuery
protected sirius.db.jdbc.SmartQuery.Compiler.JoinFetch	rootFetch

Constructor Summary

Constructors

Constructor and Description
Compiler(EntityDescriptor ed) Creates a new compiler for the given entity descriptor.

Method Summary

Modifier and Type	Method and Description
void	addParameter(Object parameter) Adds a query parameter.
TranslationState	captureAndReplaceTranslationState(String newDefaultAlias, EntityDescriptor newDefaultDescriptor) Returns the currently active translation state and replaces all settings for the new alias and base descriptor.
protected void	executeJoinFetches(SQLEntity entity, Set<String> columns, ResultSet rs)
String	generateTableAlias() Generates an unique table alias.
StringBuilder	getJoins() Provides access to the currently generated JOINs.
protected String	getQuery()
StringBuilder	getSELECTBuilder() Provides access to the string builder which generates the SELECT part of the query.
StringBuilder	getWHEREBuilder() Provides access to the string builder which generates the WHERE part of the query.
void	restoreTranslationState(TranslationState state) Restores a previously captured translation state.
void	setWHEREBuilder(StringBuilder newWHEREBuilder)
String	toString()
String	translateColumnName(Mapping column) Translates a column name into an effective name by applying aliases and rewrites.

Methods inherited from class java.lang.Object

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

Field Detail

ed

protected EntityDescriptor ed

preJoinQuery

protected StringBuilder preJoinQuery

joins

protected StringBuilder joins

postJoinQuery

protected StringBuilder postJoinQuery

parameters

protected List<Object> parameters

joinTable

protected Map<String,sirius.kernel.commons.Tuple<String,EntityDescriptor>> joinTable

aliasCounter

protected AtomicInteger aliasCounter

defaultAlias

protected String defaultAlias

rootFetch

protected sirius.db.jdbc.SmartQuery.Compiler.JoinFetch rootFetch

Constructor Detail

Compiler

public Compiler(@Nullable
                EntityDescriptor ed)

Creates a new compiler for the given entity descriptor.

Parameters:

ed - the entity descriptor which is used to determine which table to select and how to JOIN other entities.

Method Detail

getSELECTBuilder

public StringBuilder getSELECTBuilder()

Provides access to the string builder which generates the SELECT part of the query.

Returns:

the string builder representing the SELECT part of the query

getWHEREBuilder

public StringBuilder getWHEREBuilder()

Provides access to the string builder which generates the WHERE part of the query.

Returns:

the string builder representing the WHERE part of the query.

setWHEREBuilder

public void setWHEREBuilder(StringBuilder newWHEREBuilder)

generateTableAlias

public String generateTableAlias()

Generates an unique table alias.

Returns:

a table alias which is unique within this query

captureAndReplaceTranslationState

public TranslationState captureAndReplaceTranslationState(String newDefaultAlias,
                                                          EntityDescriptor newDefaultDescriptor)

Returns the currently active translation state and replaces all settings for the new alias and base descriptor.

To restore the state, restoreTranslationState(TranslationState) can be used.

Parameters:

newDefaultAlias - specifies the new default alias to use

newDefaultDescriptor - specifies the new main / default descriptor to use

Returns:

the currently active translation state

getJoins

public StringBuilder getJoins()

Provides access to the currently generated JOINs.

Returns:

the currently generated JOINs

restoreTranslationState

public void restoreTranslationState(TranslationState state)

Restores a previously captured translation state.

Parameters:

state - the original state to restore

translateColumnName

public String translateColumnName(Mapping column)

Translates a column name into an effective name by applying aliases and rewrites.

Parameters:

column - the column to translate

Returns:

the translated name which is used in the database

executeJoinFetches

protected void executeJoinFetches(SQLEntity entity,
                                  Set<String> columns,
                                  ResultSet rs)

addParameter

public void addParameter(Object parameter)

Adds a query parameter.

Parameters:

parameter - the parameter to add

getQuery

protected String getQuery()

toString

public String toString()

Overrides:

toString in class Object