com.goldencode.p2j.persist.orm

Class P2JQueryExecutor

java.lang.Object

com.goldencode.p2j.persist.orm.P2JQueryExecutor

public class P2JQueryExecutor
extends java.lang.Object

Class responsible with executing P2J queries. If logging is intended, then the execution job will be passed to P2JQueryLogger.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	P2JQueryExecutor.CompoundExecution<T1,T2,T3,T4,T5,T6,R> Functional interface, similar to Function, but accepting six arguments, and having the capability of throwing an Exception.
protected static interface	P2JQueryExecutor.LambdaLogger Basic interface that groups the functional interfaces used for logging queries.
protected static class	P2JQueryExecutor.LambdaLoggerType Enumeration used to distinguish between different P2JQueryExecutor.LambdaLoggers.
static interface	P2JQueryExecutor.PreselectExecution<T1,T2,T3,T4,R> Functional interface, similar to Function, but accepting four arguments, and having the capability of throwing an Exception.
static interface	P2JQueryExecutor.RandomAccessExecution<T1,T2,T3,T4,T5,R> Functional interface, similar to Function, but accepting five arguments, and having the capability of throwing an Exception.

Field Summary

Fields

Modifier and Type	Field and Description
private static P2JQueryExecutor	instance The static singleton instance.

Constructor Summary

Constructors

Modifier	Constructor and Description
private	P2JQueryExecutor() Private default constructor.

Method Summary

Modifier and Type	Method and Description
<T1,T2,T3,T4,R> R	execute(Database database, P2JQueryExecutor.PreselectExecution<T1,T2,T3,T4,R> r, T1 receiver, T2 arg1, T3 arg2, T4 arg3) Function that executes the given query.
<T1,T2,T3,T4,T5,T6,R> R	execute(Database database, java.lang.String fql, P2JQueryExecutor.CompoundExecution<T1,T2,T3,T4,T5,T6,R> r, T1 receiver, T2 arg1, T3 arg2, T4 arg3, T5 arg4, T6 arg5) Function that executes the given query.
private <T1,T2,T3,T4,T5,T6,R> R	execute(Database database, java.lang.String fql, P2JQueryExecutor.LambdaLogger r, T1 receiver, T2 arg1, T3 arg2, T4 arg3, T5 arg4, T6 arg5, P2JQueryExecutor.LambdaLoggerType type) Function that handles the execution of the given query.
<T1,T2,T3,T4,T5,R> R	execute(Database database, java.lang.String fql, P2JQueryExecutor.RandomAccessExecution<T1,T2,T3,T4,T5,R> r, T1 receiver, T2 arg1, T3 arg2, T4 arg3, T5 arg4) Function that executes the given query.
private <T1,T2,T3,T4,T5,T6,R> R	executeImpl(P2JQueryExecutor.LambdaLogger r, T1 receiver, T2 arg1, T3 arg2, T4 arg3, T5 arg4, T6 arg5, P2JQueryExecutor.LambdaLoggerType type) The actual place where the query execution happens.
static P2JQueryExecutor	getInstance() Static accessor to singleton.

Methods inherited from class java.lang.Object

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

Field Detail

instance

private static final P2JQueryExecutor instance

The static singleton instance.

Constructor Detail

P2JQueryExecutor

private P2JQueryExecutor()

Private default constructor.

Method Detail

getInstance

public static P2JQueryExecutor getInstance()

Static accessor to singleton.

Returns:

The P2JQueryExecutor singleton instance.

execute

public <T1,T2,T3,T4,R> R execute(Database database,
                                 P2JQueryExecutor.PreselectExecution<T1,T2,T3,T4,R> r,
                                 T1 receiver,
                                 T2 arg1,
                                 T3 arg2,
                                 T4 arg3)
                          throws QueryOffEndException,
                                 PersistenceException

Function that executes the given query.

Type Parameters:

T1 - The receiver type (PreselectQuery or a child of it).

T2 - The type of the first argument.

T3 - The type of the second argument.

T4 - The type of the third argument.

R - The type for the result.

Parameters:

database - The database used for this query.

r - The method that needs to be executed.

receiver - Receiver denoting the query that will be executed.

arg1 - First parameter given to the executed method.

arg2 - Second parameter given to the executed method.

arg3 - Third parameter given to the executed method.

Returns:

R The result generated by the execution of the query.

Throws:

QueryOffEndException

PersistenceException

execute

public <T1,T2,T3,T4,T5,R> R execute(Database database,
                                    java.lang.String fql,
                                    P2JQueryExecutor.RandomAccessExecution<T1,T2,T3,T4,T5,R> r,
                                    T1 receiver,
                                    T2 arg1,
                                    T3 arg2,
                                    T4 arg3,
                                    T5 arg4)
                             throws QueryOffEndException,
                                    PersistenceException

Function that executes the given query.

Type Parameters:

T1 - The receiver type (RandomAccessQuery or a child of it).

T2 - The type of the first argument.

T3 - The type of the second argument.

T4 - The type of the third argument.

T5 - The type of the fourth argument.

R - The type for the result.

Parameters:

database - The database used for this query.

fql - The FQL of the query.

r - The method that needs to be executed.

receiver - Receiver denoting the query that will be executed.

arg1 - First parameter given to the executed method.

arg2 - Second parameter given to the executed method.

arg3 - Third parameter given to the executed method.

arg4 - Fourth parameter given to the executed method.

Returns:

R The result generated by the execution of the query.

Throws:

QueryOffEndException

PersistenceException

execute

public <T1,T2,T3,T4,T5,T6,R> R execute(Database database,
                                       java.lang.String fql,
                                       P2JQueryExecutor.CompoundExecution<T1,T2,T3,T4,T5,T6,R> r,
                                       T1 receiver,
                                       T2 arg1,
                                       T3 arg2,
                                       T4 arg3,
                                       T5 arg4,
                                       T6 arg5)
                                throws QueryOffEndException,
                                       PersistenceException

Function that executes the given query.

Type Parameters:

T1 - The receiver type (CompoundQuery or a child of it).

T2 - The type of the first argument.

T3 - The type of the second argument.

T4 - The type of the third argument.

T5 - The type of the fourth argument.

T6 - The type of the fifth argument.

R - The type for the result.

Parameters:

database - The database used for this query.

fql - The FQL of the query.

r - The method that needs to be executed.

receiver - Receiver denoting the query that will be executed.

arg1 - First parameter given to the executed method.

arg2 - Second parameter given to the executed method.

arg3 - Third parameter given to the executed method.

arg4 - Fourth parameter given to the executed method.

arg5 - Fifth parameter given to the executed method.

Returns:

R The result generated by the execution of the query.

Throws:

QueryOffEndException

PersistenceException

execute

private <T1,T2,T3,T4,T5,T6,R> R execute(Database database,
                                        java.lang.String fql,
                                        P2JQueryExecutor.LambdaLogger r,
                                        T1 receiver,
                                        T2 arg1,
                                        T3 arg2,
                                        T4 arg3,
                                        T5 arg4,
                                        T6 arg5,
                                        P2JQueryExecutor.LambdaLoggerType type)
                                 throws QueryOffEndException,
                                        PersistenceException

Function that handles the execution of the given query. In case logging is intended, it will delegate P2JQueryLogger to do that.

Type Parameters:

T1 - The receiver type (e.g. CompoundQuery, RandomAccessQuery, etc).

T2 - The type of the first argument.

T3 - The type of the second argument.

T4 - The type of the third argument.

T5 - The type of the fourth argument.

T6 - The type of the fifth argument.

R - The type for the result.

Parameters:

database - The database used for this query.

fql - The FQL of the query.

r - The method that needs to be executed.

receiver - Receiver denoting the query that will be executed.

arg1 - First parameter given to the executed method.

arg2 - Second parameter given to the executed method.

arg3 - Third parameter given to the executed method.

arg4 - Fourth parameter given to the executed method.

arg5 - Fifth parameter given to the executed method.

type - The type of the LambaLogger used.

Returns:

R The result generated by the execution of the query.

Throws:

QueryOffEndException

PersistenceException

executeImpl

private <T1,T2,T3,T4,T5,T6,R> R executeImpl(P2JQueryExecutor.LambdaLogger r,
                                            T1 receiver,
                                            T2 arg1,
                                            T3 arg2,
                                            T4 arg3,
                                            T5 arg4,
                                            T6 arg5,
                                            P2JQueryExecutor.LambdaLoggerType type)
                                     throws QueryOffEndException,
                                            PersistenceException

The actual place where the query execution happens.

Type Parameters:

T1 - The receiver type (e.g. CompoundQuery, RandomAccessQuery, etc).

T2 - The type of the first argument.

T3 - The type of the second argument.

T4 - The type of the third argument.

T5 - The type of the fourth argument.

T6 - The type of the fifth argument.

R - The type for the result.

Parameters:

r - The method that needs to be executed.

receiver - Receiver denoting the query that will be executed.

arg1 - First parameter given to the executed method.

arg2 - Second parameter given to the executed method.

arg3 - Third parameter given to the executed method.

arg4 - Fourth parameter given to the executed method.

arg5 - Fifth parameter given to the executed method.

type - The type of the LambaLogger used.

Returns:

R The result generated by the execution of the query.

Throws:

QueryOffEndException

PersistenceException