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0.10.8-alpha
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0.10.8-alpha
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Returns the first n input events and discards the following ones. More...
Public Member Functions | |
| Prefix (int k) | |
| void | reset () |
| Object | getState () |
| Gets the token corresponding to the processor's internal state. More... | |
 Public Member Functions inherited from ca.uqac.lif.cep.tmf.Trim | |
| Trim (int delay) | |
| Creates a new delay processor. More... | |
| Trim | duplicate (boolean with_state) |
| Duplicates an object. More... | |
| int | getDelay () |
| Gets the delay associated to the trim processor. More... | |
| Object | getState () |
| Public Member Functions inherited from ca.uqac.lif.cep.SynchronousProcessor | |
| SynchronousProcessor (int in_arity, int out_arity) | |
| Initializes a processor. More... | |
| synchronized Pushable | getPushableInput (int index) |
| synchronized Pullable | getPullableOutput (int index) |
| final SynchronousProcessor | setEventTracker (EventTracker tracker) |
| Public Member Functions inherited from ca.uqac.lif.cep.Processor | |
| Processor (int in_arity, int out_arity) | |
| Initializes a processor. More... | |
| final synchronized Object | getContext (String key) |
| Retrieves an object from the processor's context. More... | |
| synchronized Context | getContext () |
| Gets the context associated to this object. More... | |
| synchronized void | setContext (String key, Object value) |
| Adds an object to the object's context. More... | |
| synchronized void | setContext (Context context) |
| Adds a complete context to this object. More... | |
| final int | hashCode () |
| Implementation of hashCode() specific to processors. More... | |
| final boolean | equals (Object o) |
| Implementation of equals() specific to processors. More... | |
| final int | getId () |
| Fetches the processor instance's unique ID. More... | |
| synchronized void | reset () |
| Resets the processor. More... | |
| abstract Pushable | getPushableInput (int index) |
| Returns the Pushable corresponding to the processor's i-th input trace. More... | |
| final synchronized Pushable | getPushableInput () |
| Returns the Pushable corresponding to the processor's first input trace. More... | |
| abstract Pullable | getPullableOutput (int index) |
| Returns the Pullable corresponding to the processor's i-th output trace. More... | |
| final synchronized Pullable | getPullableOutput () |
| Returns the Pullable corresponding to the processor's first output trace. More... | |
| synchronized void | setPullableInput (int i, Pullable p) |
| Assigns a Pullable to the processor's i-th input. More... | |
| synchronized Pullable | getPullableInput (int i) |
| Returns the Pullable corresponding to the processor's i-th input. More... | |
| synchronized void | setPushableOutput (int i, Pushable p) |
| Assigns a Pushable to the processor's i-th output. More... | |
| synchronized Pushable | getPushableOutput (int i) |
| Retrieves the Pushable associated to the processor's i-th output. More... | |
| final int | getInputArity () |
| Returns the processor's input arity. More... | |
| final int | getOutputArity () |
| Returns the processor's output arity. More... | |
| void | duplicateInto (Processor p) |
| Copies the contents and state of the current processor into another. More... | |
| final Set< Class<?> > | getInputType (int index) |
| Gets the type of events the processor accepts for its i-th input trace. More... | |
| void | getInputTypesFor (Set< Class<?>> classes, int index) |
| Populates the set of classes accepted by the processor for its i-th input. More... | |
| Class<?> | getOutputType (int index) |
| Returns the type of the events produced by the processor for its i-th output. More... | |
| void | start () |
| Starts the processor. More... | |
| void | stop () |
| Stops the processor. More... | |
| final EventTracker | getEventTracker () |
| Gets the instance of event tracker associated to this processor. More... | |
| Processor | setEventTracker (EventTracker tracker) |
| Associates an event tracker to this processor. More... | |
| void | associateToInput (int in_stream_index, int in_stream_pos, int out_stream_index, int out_stream_pos) |
| Associates an input event to an output event. More... | |
| void | associateTo (NodeFunction f, int out_stream_index, int out_stream_pos) |
| Associates a node function to a particular event of processor's output stream. More... | |
| void | associateToOutput (int in_stream_index, int in_stream_pos, int out_stream_index, int out_stream_pos) |
| Associates an input event to an output event. More... | |
| final int | getInputCount () |
| Gets the number of event fronts received so far by this processor. More... | |
| final int | getOutputCount () |
| Gets the number of event fronts produced so far by this processor. More... | |
| final Object | print (ObjectPrinter<?> printer) throws ProcessorException |
| Prints the contents of this processor into an object printer. More... | |
| final Processor | read (ObjectReader<?> reader, Object o) throws ProcessorException |
| Reads the content of a processor from a serialized object. More... | |
| final Processor | duplicate () |
| Duplicates an object and sets it to its initial state. More... | |
| void | copyInputQueue (int index, Collection< Object > to) |
| Copies the content of one of the processor's input queue to a collection. More... | |
| void | copyOutputQueue (int index, Collection< Object > to) |
| Copies the content of one of the processor's output queue to a collection. More... | |
| abstract Processor | duplicate (boolean with_state) |
| Duplicates an object. More... | |
| Processor | or (Processor p) |
| Connects the first output pipe of this processor to the first input pipe of another processor. More... | |
| Processor | or (Pushable p) |
| Connects the output at index 0 of the current processor to the input of another processor. More... | |
| Pushable | getAt (int index) |
| Gets the Pushable object corresponding to the processor's input pipe for a given index. More... | |
Protected Member Functions | |
| boolean | compute (Object[] inputs, Queue< Object[]> outputs) |
| Protected Member Functions inherited from ca.uqac.lif.cep.tmf.Trim | |
| boolean | compute (Object[] inputs, Queue< Object[]> outputs) |
| Object | printState () |
| Trim | readState (Object o) |
| Protected Member Functions inherited from ca.uqac.lif.cep.SynchronousProcessor | |
| abstract boolean | compute (Object[] inputs, Queue< Object[]> outputs) |
| Computes one or more output events from its input events. More... | |
| Protected Member Functions inherited from ca.uqac.lif.cep.Processor | |
| boolean | allNotifiedEndOfTrace () |
| Determines if all the upstream pushables have sent the end of trace notification. More... | |
| final Context | newContext () |
| Creates a new empty context map. More... | |
| boolean | onEndOfTrace (Queue< Object[]> outputs) throws ProcessorException |
| Allows to describe a specific behavior when the trace of input fronts has reached its end. More... | |
| Object | printState () |
| Produces an object that represents the state of the current processor. More... | |
| Processor | readState (Object o) |
| Reads the state of a processor and uses it to create a new instance. More... | |
Additional Inherited Members | |
| Static Public Member Functions inherited from ca.uqac.lif.cep.Processor | |
| static boolean | allNull (Object[] v) |
| Checks if all objects in the array are null. More... | |
| static Queue< Object[]> | getEmptyQueue () |
| Gets an instance of an empty event queue. More... | |
| static void | startAll (Processor ... procs) |
| Starts all processors given as an argument. More... | |
| static void | stopAll (Processor ... procs) |
| Stops all processors given as an argument. More... | |
| static List< ProvenanceNode > | getLeaves (ProvenanceNode root) |
| Gets the leaves of a provenance tree. More... | |
| Static Public Attributes inherited from ca.uqac.lif.cep.Processor | |
| static final transient String | s_versionString = "0.10.5" |
| A string used to identify the program's version. More... | |
| static final transient int | MAX_PULL_RETRIES = 10000000 |
| Number of times the Pullable#hasNext() method tries to produce an output from the input before giving up. More... | |
| Static Protected Member Functions inherited from ca.uqac.lif.cep.Processor | |
| static void | getLeaves (ProvenanceNode root, List< ProvenanceNode > leaves) |
| Accumulates the leaves of a provenance tree in a list. More... | |
| Protected Attributes inherited from ca.uqac.lif.cep.tmf.Trim | |
| final int | m_delay |
| How many events to ignore at the beginning of the trace. More... | |
| Protected Attributes inherited from ca.uqac.lif.cep.SynchronousProcessor | |
| final transient Queue< Object[]> | m_tempQueue |
| A queue object that will be passed to the compute(Object[], Queue) method. More... | |
| final transient Pushable [] | m_inputPushables |
| An array of input pushables. More... | |
| transient Pullable [] | m_outputPullables |
| An array of output pullables. More... | |
| Protected Attributes inherited from ca.uqac.lif.cep.Processor | |
| int | m_inputArity |
| The processor's input arity, i.e. More... | |
| int | m_outputArity |
| The processor's output arity, i.e. More... | |
| transient Queue< Object > [] | m_inputQueues |
| An array of input event queues. More... | |
| transient EventTracker | m_eventTracker = null |
| An object that keeps track of the relationship between input and output events. More... | |
| transient Queue< Object > [] | m_outputQueues |
| An array of output event queues. More... | |
| transient Pullable [] | m_inputPullables |
| An array of Pullables, one for each input trace this processor receives. More... | |
| transient Pushable [] | m_outputPushables |
| An array of Pushables, one for each output trace this processor produces. More... | |
| int | m_inputCount = 0 |
| A counter incremented upon each input front processed. More... | |
| int | m_outputCount = 0 |
| A counter incremented upon each output front processed. More... | |
| Context | m_context = null |
| The context in which the processor is instantiated. More... | |
| boolean [] | m_hasBeenNotifiedOfEndOfTrace |
| Indicates whether the processor has been notified of the end of trace or not. More... | |
Returns the first n input events and discards the following ones.
Definition at line 29 of file Prefix.java.
| ca.uqac.lif.cep.tmf.Prefix.Prefix | ( | int | k | ) |
Definition at line 31 of file Prefix.java.
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protected |
Definition at line 38 of file Prefix.java.
| Object ca.uqac.lif.cep.tmf.Prefix.getState | ( | ) |
Gets the token corresponding to the processor's internal state.
| UnsupportedOperationException | Thrown if the internal state cannot be provided for some reason |
Implements ca.uqac.lif.cep.Stateful.
Definition at line 56 of file Prefix.java.
| void ca.uqac.lif.cep.tmf.Prefix.reset | ( | ) |
Definition at line 50 of file Prefix.java.
1.8.13