Class Executions
- java.lang.Object
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- org.jgroups.blocks.executor.Executions
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public final class Executions extends java.lang.Object
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Nested Class Summary
Nested Classes Modifier and Type Class Description protected static class
Executions.StreamableCallable
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static java.util.concurrent.Callable<?>
serializableCallable(java.lang.reflect.Constructor<? extends java.util.concurrent.Callable> constructorToUse, java.lang.Object... args)
This method should be used to convert a callable that would not normally be serializable, externalizable or streamable but has serializable, externalizable or streamable arguments to a constructor to construct it.
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Method Detail
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serializableCallable
public static java.util.concurrent.Callable<?> serializableCallable(java.lang.reflect.Constructor<? extends java.util.concurrent.Callable> constructorToUse, java.lang.Object... args) throws java.lang.IllegalArgumentException
This method should be used to convert a callable that would not normally be serializable, externalizable or streamable but has serializable, externalizable or streamable arguments to a constructor to construct it.When the call method is called on the callable it will call the provided constructor passing in the given arguments. It will then invoke the call method on resulting callable that was created.
The amount of arguments cannot exceed
Byte.MAX_VALUE
. Also the constructor cannot exceedByte.MAX_VALUE
position in the constructor array returned fromClass.getConstructors()
The amount of arguments must match the amount of arguments required by the constructor. Also the arguments must be compatible with the types required of the constructor.
Unfortunately it isn't easy to pass a Constructor extends Callable
> so we can't pass back a callable that is properly typed. Also this forces the caller to cast their callable or returned value to the correct type manually. - Parameters:
constructorToUse
- The constructor to use when creating the callableargs
- The arguments to pass to the constructor- Returns:
- The callable that will upon being called will instantiate the given callable using the constructor with the provided arguments and calls the call method
- Throws:
java.lang.IllegalArgumentException
- This is thrown if the arguments are not serializable, externalizable or streamable. It can be thrown if the constructo is not accessible. It can also be thrown if too many arguments or the constructor is to high up in the constructo array returned by the class.
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