Module org.postgresql.pljava.internal

Package org.postgresql.pljava.internal

Class CacheMap<T>

java.lang.Object

org.postgresql.pljava.internal.CacheMap<T>

public class CacheMap<T>
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	CacheMap.Entry<T>

Method Summary

Modifier and Type	Method	Description
<E extends Throwable> CacheMap.Entry<T>	find(Checked.Consumer<ByteBuffer,E> keyer)	Simple lookup, with no way to cache a new entry; returns null if no such entry is present.
void	forEachValue(Consumer<T> action)
static <T> CacheMap<T>	newConcurrent(Supplier<? extends ByteBuffer> keyBufferSupplier)	Construct a CacheMap based on a concurrent map.
static <T> CacheMap<T>	newThreadConfined(Supplier<? extends ByteBuffer> keyBufferSupplier)	Construct a CacheMap based on a non-thread-safe map, for cases where concurrent access from multiple threads can be ruled out.
<E extends Throwable, E1 extends E, E2 extends E> T	softlyCache(Checked.Consumer<ByteBuffer,E1> keyer, Checked.Function<ByteBuffer,T,E2> cacher)
<E extends Throwable, E1 extends E, E2 extends E> T	stronglyCache(Checked.Consumer<ByteBuffer,E1> keyer, Checked.Function<ByteBuffer,T,E2> cacher)
String	toString()
<E extends Throwable, E1 extends E, E2 extends E> T	weaklyCache(Checked.Consumer<ByteBuffer,E1> keyer, Checked.Function<ByteBuffer,T,E2> cacher)

Methods inherited from class java.lang.Object

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

Method Details

newConcurrent

public static <T> CacheMap<T> newConcurrent(Supplier<? extends ByteBuffer> keyBufferSupplier)

Construct a CacheMap based on a concurrent map.

newThreadConfined

public static <T> CacheMap<T> newThreadConfined(Supplier<? extends ByteBuffer> keyBufferSupplier)

Construct a CacheMap based on a non-thread-safe map, for cases where concurrent access from multiple threads can be ruled out.

softlyCache

public <E extends Throwable,
E1 extends E,
E2 extends E>
T softlyCache(Checked.Consumer<ByteBuffer,E1> keyer,
 Checked.Function<ByteBuffer,T,E2> cacher)
       throws E

Throws:

E

weaklyCache

public <E extends Throwable,
E1 extends E,
E2 extends E>
T weaklyCache(Checked.Consumer<ByteBuffer,E1> keyer,
 Checked.Function<ByteBuffer,T,E2> cacher)
       throws E

Throws:

E

stronglyCache

public <E extends Throwable,
E1 extends E,
E2 extends E>
T stronglyCache(Checked.Consumer<ByteBuffer,E1> keyer,
 Checked.Function<ByteBuffer,T,E2> cacher)
         throws E

Throws:

E

toString

public String toString()

Overrides:

toString in class Object

find

public <E extends Throwable> CacheMap.Entry<T> find(Checked.Consumer<ByteBuffer,E> keyer)
                                             throws E

Simple lookup, with no way to cache a new entry; returns null if no such entry is present.

Returns an Entry if found, which provides a method to remove the entry if appropriate.

Throws:

E

forEachValue

public void forEachValue(Consumer<T> action)