Package ch.tocco.nice2.optional.drools.api.facts

Class EntityFact

java.lang.Object

ch.tocco.nice2.optional.drools.api.facts.EntityFact

public final class EntityFact
extends Object

A fact that encapsulates an Entity.

The backed entity can be queried for values (and related values, like `relA.relB.label`) and can be used to add new `EntityFact`s that are obtained via relation resolving.

The fact carries a map of `state` values. This can be used to add rule results, which is normally modelled by an java bean property. Since this is a generalized fact, the results can be arbitary objects. The `states` map defines a key of type EntityFact.Key which also carries type information about the value may be associated. The association, however, does only depend on the name of the key. Thus a key `Key("name1", String.class)` can be used to override a previously defined mapping from a key `Key("name1", Boolean.class)`. On getStatus(Key) the value is only returned, if the type of the given key is assignable from the type of the value associated to the name of the key.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final class	EntityFact.Key<T>

Constructor Summary

Constructors

Constructor	Description
EntityFact(Entity entity, QueryBuilderFactory factory)

Method Summary

Modifier and Type	Method	Description
void	clearStates()
@Nullable EntityFact	entity(String relationPath)
@Nullable EntityFact	entity(String relationPath, @Nullable String conditions)
Entity.State	entityState()
boolean	equals(Object o)
@Nullable Object	field(String path)
Entity	getEntity()
String	getModel()
<T> Optional<T>	getStatus(EntityFact.Key<T> key)
int	hashCode()
boolean	hasStates()
boolean	hasStatus(String name)
@Nullable Object	key()
static <T> EntityFact.Key<T>	key(String name, com.google.common.reflect.TypeToken<T> type)
static <T> EntityFact.Key<T>	key(String name, Class<T> type)
boolean	noStates()
@Nullable PrimaryKey	primaryKey()
void	remove(EntityFact.Key<?> key)
QueryBuilder	resolve(String path)
<T> void	setStatus(EntityFact.Key<T> key, T value)
void	setStatus(String name, boolean value)
void	setStatus(String name, int value)
void	setStatus(String name, long value)
<T> void	setStatus(String name, Class<T> type, T value)
void	setStatus(String name, String value)
@Nullable Object	state(String name)	Returns a state object for the given key name.
String	toString()
boolean	where(String q)

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Details

EntityFact

public EntityFact(Entity entity,
 QueryBuilderFactory factory)

Method Details

toString

public String toString()

Overrides:

toString in class Object

where

public boolean where(String q)

field

@Nullable
public @Nullable Object field(String path)

entity

@Nullable
public @Nullable EntityFact entity(String relationPath,
 @Nullable
 @Nullable String conditions)

entity

@Nullable
public @Nullable EntityFact entity(String relationPath)

resolve

public QueryBuilder resolve(String path)

getModel

public String getModel()

key

@Nullable
public @Nullable Object key()

primaryKey

@Nullable
public @Nullable PrimaryKey primaryKey()

getEntity

public Entity getEntity()

entityState

public Entity.State entityState()

setStatus

public <T> void setStatus(EntityFact.Key<T> key,
 T value)

setStatus

public <T> void setStatus(String name,
 Class<T> type,
 T value)

setStatus

public void setStatus(String name,
 String value)

setStatus

public void setStatus(String name,
 boolean value)

setStatus

public void setStatus(String name,
 int value)

setStatus

public void setStatus(String name,
 long value)

getStatus

public <T> Optional<T> getStatus(EntityFact.Key<T> key)

hasStatus

public boolean hasStatus(String name)

remove

public void remove(EntityFact.Key<?> key)

clearStates

public void clearStates()

hasStates

public boolean hasStates()

noStates

public boolean noStates()

state

@Nullable
public @Nullable Object state(String name)

Returns a state object for the given key name. This is meant to be used from within drools rules. Otherwise, the getStatus(Key) is preferred.

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

key

public static <T> EntityFact.Key<T> key(String name,
 com.google.common.reflect.TypeToken<T> type)

key

public static <T> EntityFact.Key<T> key(String name,
 Class<T> type)