Class TimestampSet
- java.lang.Object
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- com.apama.util.TimestampSet
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- All Implemented Interfaces:
java.lang.Iterable<java.util.Map.Entry<java.lang.Integer,java.lang.Double>>
,java.util.Map<java.lang.Integer,java.lang.Double>
public class TimestampSet extends java.lang.Object implements java.lang.Iterable<java.util.Map.Entry<java.lang.Integer,java.lang.Double>>, java.util.Map<java.lang.Integer,java.lang.Double>
Represents a set of high-accuracy timestamps, used for latency measurement.The timestamp set is represented as a dictionary of integer-float pairs, where the integer index refers to the location at which the timestamp was added and the floating-point time gives the time at which an event was there.
The class provides methods for constructing, manipulating and querying the contents of the timestamp set.
Note that this class is NOT itself thread-safe.
This class defines a number of constants for representing different points in the journey of an event/message through the layers of the IAF, which can be enabled by setting the relevant recordUpstream/recordDownstream configuration setting. The most commonly used timestamps are:
- Semantic mapper entry/exit timestamps (supported out of the box):
AP_TIMESTAMP_DOWNSTREAM_IAF_MAPPER_ENTRY
/AP_TIMESTAMP_DOWNSTREAM_IAF_MAPPER_ENTRY
,AP_TIMESTAMP_UPSTREAM_IAF_MAPPER_ENTRY
/AP_TIMESTAMP_UPSTREAM_IAF_MAPPER_ENTRY
- (Optional) Codec entry/exit timestamps:
AP_TIMESTAMP_DOWNSTREAM_IAF_DECODER_ENTRY
/AP_TIMESTAMP_DOWNSTREAM_IAF_DECODER_EXIT
,AP_TIMESTAMP_UPSTREAM_IAF_ENCODER_ENTRY
/AP_TIMESTAMP_UPSTREAM_IAF_ENCODER_EXIT
- (Optional) Transport entry/exit timestamps:
AP_TIMESTAMP_DOWNSTREAM_IAF_TRANSPORT_ENTRY
/AP_TIMESTAMP_DOWNSTREAM_IAF_TRANSPORT_EXIT
,AP_TIMESTAMP_UPSTREAM_IAF_TRANSPORT_ENTRY
/AP_TIMESTAMP_UPSTREAM_IAF_TRANSPORT_EXIT
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Field Summary
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Constructor Summary
Constructors Constructor Description TimestampSet()
Constructs a new TimestampSet, initially empty.TimestampSet(java.util.Map<java.lang.Integer,java.lang.Double> m)
Constructs a new TimestampSet, with the same name/time pairs as the specified Map or TimestampSet.
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Deprecated Methods Modifier and Type Method Description void
addNow(java.lang.Integer index)
Add a new index-time pair to the event.void
addTime(java.lang.Integer index, java.lang.Double theTime)
Add a new index-time pair to the timestamp.void
clear()
Removes all mappings from this map.boolean
containsKey(java.lang.Object index)
Returns true if this map contains the specified keyboolean
containsValue(java.lang.Object time)
Returns true if this map maps one or more names to the specified time.java.util.Set<java.util.Map.Entry<java.lang.Integer,java.lang.Double>>
entrySet()
java.lang.Double
findTime(java.lang.Integer index)
Search for a named element in the timestamp set and return its time.java.lang.Double
findTimeAndRemove(java.lang.Integer index)
Search for a named element in the timestamp set and return its time.java.lang.Double
get(java.lang.Object index)
Returns the time to which the specified name is mapped, or null if the map contains no mapping for this index.static double
getMicroTime()
Get the current microsecond-accurate relative timestamp.boolean
isEmpty()
Returns true if this map contains no index-time mappings.java.util.Iterator<java.util.Map.Entry<java.lang.Integer,java.lang.Double>>
iterator()
Returns a standard Java Iterator over the contents of the TimestampSet usingMap.Entry
objects.java.util.Set<java.lang.Integer>
keySet()
java.lang.Double
put(java.lang.Integer index, java.lang.Double time)
Adds or replaces the specified (index,time) pair in the underlying mapvoid
putAll(java.util.Map<? extends java.lang.Integer,? extends java.lang.Double> m)
Copies all of the mappings from the specified map to this map These mappings will replace any mappings that this map had for any of the indices currently in the specified map.void
putNow(java.lang.Integer index)
Set the time of a specified timestamp in the timestamp set to current time, regardless of whether a timestamp with the given index already exists.java.lang.Double
remove(java.lang.Object index)
Removes the mapping for this index from this map if present.java.lang.Double
replace(java.lang.Integer index, java.lang.Double newTime)
Deprecated.This method has been deprecated to avoid confusion with Map.replace; please update code to useput(Integer, Double)
instead.void
replaceWithNow(java.lang.Integer index)
Deprecated.This method has been deprecated to avoid confusion with Map.replace; please update code to useputNow(Integer)
instead.int
size()
Get the number of elements (name-time pairs) currently stored by the event.java.lang.String
toString()
Return a printable string representation of the timestamp set.java.util.Collection<java.lang.Double>
values()
Returns a collection view of the times contained in this map.
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Field Detail
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AP_TIMESTAMP_DOWNSTREAM_IAF_MIN
public static final int AP_TIMESTAMP_DOWNSTREAM_IAF_MIN
- See Also:
- Constant Field Values
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AP_TIMESTAMP_DOWNSTREAM_IAF_TRANSPORT_ENTRY
public static final int AP_TIMESTAMP_DOWNSTREAM_IAF_TRANSPORT_ENTRY
Optionally implemented by a transport, represents the time a message from the external system is received by the transport.- See Also:
- Constant Field Values
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AP_TIMESTAMP_DOWNSTREAM_IAF_TRANSPORT_EXIT
public static final int AP_TIMESTAMP_DOWNSTREAM_IAF_TRANSPORT_EXIT
Optionally implemented by a transport, represents the time a message leaves the transport.- See Also:
- Constant Field Values
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AP_TIMESTAMP_DOWNSTREAM_IAF_DECODER_ENTRY
public static final int AP_TIMESTAMP_DOWNSTREAM_IAF_DECODER_ENTRY
Optionally implemented by a codec, represents the time a message from the transport enters the codec.- See Also:
- Constant Field Values
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AP_TIMESTAMP_DOWNSTREAM_IAF_DECODER_EXIT
public static final int AP_TIMESTAMP_DOWNSTREAM_IAF_DECODER_EXIT
Optionally implemented by a codec, represents the time a normalised event leaves the codec (for the semantic mapper).- See Also:
- Constant Field Values
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AP_TIMESTAMP_DOWNSTREAM_IAF_MAPPER_ENTRY
public static final int AP_TIMESTAMP_DOWNSTREAM_IAF_MAPPER_ENTRY
Represents the time a normalised event enters the semantic mapper before being sent to the Correlator.- See Also:
- Constant Field Values
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AP_TIMESTAMP_DOWNSTREAM_IAF_MAPPER_EXIT
public static final int AP_TIMESTAMP_DOWNSTREAM_IAF_MAPPER_EXIT
Represents the time a normalised event leaves the semantic mapper before being sent to the Correlator.- See Also:
- Constant Field Values
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AP_TIMESTAMP_DOWNSTREAM_IAF_APAMA_ENTRY
public static final int AP_TIMESTAMP_DOWNSTREAM_IAF_APAMA_ENTRY
Not currently implemented, do not use.- See Also:
- Constant Field Values
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AP_TIMESTAMP_DOWNSTREAM_IAF_APAMA_EXIT
public static final int AP_TIMESTAMP_DOWNSTREAM_IAF_APAMA_EXIT
Not currently implemented, do not use.- See Also:
- Constant Field Values
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AP_TIMESTAMP_DOWNSTREAM_IAF_MAX
public static final int AP_TIMESTAMP_DOWNSTREAM_IAF_MAX
- See Also:
- Constant Field Values
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AP_TIMESTAMP_DOWNSTREAM_SENDER_MIN
public static final int AP_TIMESTAMP_DOWNSTREAM_SENDER_MIN
- See Also:
- Constant Field Values
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AP_TIMESTAMP_DOWNSTREAM_SENDER_MAX
public static final int AP_TIMESTAMP_DOWNSTREAM_SENDER_MAX
- See Also:
- Constant Field Values
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AP_TIMESTAMP_DOWNSTREAM_CORRELATOR_MIN
public static final int AP_TIMESTAMP_DOWNSTREAM_CORRELATOR_MIN
- See Also:
- Constant Field Values
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AP_TIMESTAMP_DOWNSTREAM_CORRELATOR_INPUT_MIN
public static final int AP_TIMESTAMP_DOWNSTREAM_CORRELATOR_INPUT_MIN
- See Also:
- Constant Field Values
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AP_TIMESTAMP_DOWNSTREAM_CORRELATOR_INPUT_MAX
public static final int AP_TIMESTAMP_DOWNSTREAM_CORRELATOR_INPUT_MAX
- See Also:
- Constant Field Values
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AP_TIMESTAMP_DOWNSTREAM_CORRELATOR_SERVICE_MONITOR_MIN
public static final int AP_TIMESTAMP_DOWNSTREAM_CORRELATOR_SERVICE_MONITOR_MIN
- See Also:
- Constant Field Values
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AP_TIMESTAMP_DOWNSTREAM_CORRELATOR_SERVICE_MONITOR_MAX
public static final int AP_TIMESTAMP_DOWNSTREAM_CORRELATOR_SERVICE_MONITOR_MAX
- See Also:
- Constant Field Values
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AP_TIMESTAMP_DOWNSTREAM_CORRELATOR_RESERVED1_MIN
public static final int AP_TIMESTAMP_DOWNSTREAM_CORRELATOR_RESERVED1_MIN
- See Also:
- Constant Field Values
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AP_TIMESTAMP_DOWNSTREAM_CORRELATOR_RESERVED1_MAX
public static final int AP_TIMESTAMP_DOWNSTREAM_CORRELATOR_RESERVED1_MAX
- See Also:
- Constant Field Values
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AP_TIMESTAMP_DOWNSTREAM_CORRELATOR_RESERVED2_MIN
public static final int AP_TIMESTAMP_DOWNSTREAM_CORRELATOR_RESERVED2_MIN
- See Also:
- Constant Field Values
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AP_TIMESTAMP_DOWNSTREAM_CORRELATOR_RESERVED2_MAX
public static final int AP_TIMESTAMP_DOWNSTREAM_CORRELATOR_RESERVED2_MAX
- See Also:
- Constant Field Values
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AP_TIMESTAMP_DOWNSTREAM_CORRELATOR_APPLICATION_MIN
public static final int AP_TIMESTAMP_DOWNSTREAM_CORRELATOR_APPLICATION_MIN
- See Also:
- Constant Field Values
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AP_TIMESTAMP_DOWNSTREAM_CORRELATOR_APPLICATION_MAX
public static final int AP_TIMESTAMP_DOWNSTREAM_CORRELATOR_APPLICATION_MAX
- See Also:
- Constant Field Values
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AP_TIMESTAMP_DOWNSTREAM_CORRELATOR_OUTPUT_MIN
public static final int AP_TIMESTAMP_DOWNSTREAM_CORRELATOR_OUTPUT_MIN
- See Also:
- Constant Field Values
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AP_TIMESTAMP_DOWNSTREAM_CORRELATOR_OUTPUT_MAX
public static final int AP_TIMESTAMP_DOWNSTREAM_CORRELATOR_OUTPUT_MAX
- See Also:
- Constant Field Values
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AP_TIMESTAMP_DOWNSTREAM_CORRELATOR_MAX
public static final int AP_TIMESTAMP_DOWNSTREAM_CORRELATOR_MAX
- See Also:
- Constant Field Values
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AP_TIMESTAMP_DOWNSTREAM_MERGER_MIN
public static final int AP_TIMESTAMP_DOWNSTREAM_MERGER_MIN
- See Also:
- Constant Field Values
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AP_TIMESTAMP_DOWNSTREAM_MERGE_MAX
public static final int AP_TIMESTAMP_DOWNSTREAM_MERGE_MAX
- See Also:
- Constant Field Values
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AP_TIMESTAMP_DOWNSTREAM_CLIENT_MIN
public static final int AP_TIMESTAMP_DOWNSTREAM_CLIENT_MIN
- See Also:
- Constant Field Values
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AP_TIMESTAMP_DOWNSTREAM_CLIENT_MAX
public static final int AP_TIMESTAMP_DOWNSTREAM_CLIENT_MAX
- See Also:
- Constant Field Values
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AP_TIMESTAMP_UPSTREAM_CLIENT_MIN
public static final int AP_TIMESTAMP_UPSTREAM_CLIENT_MIN
- See Also:
- Constant Field Values
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AP_TIMESTAMP_UPSTREAM_CLIENT_MAX
public static final int AP_TIMESTAMP_UPSTREAM_CLIENT_MAX
- See Also:
- Constant Field Values
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AP_TIMESTAMP_UPSTREAM_SENDER_MIN
public static final int AP_TIMESTAMP_UPSTREAM_SENDER_MIN
- See Also:
- Constant Field Values
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AP_TIMESTAMP_UPSTREAM_SENDER_MAX
public static final int AP_TIMESTAMP_UPSTREAM_SENDER_MAX
- See Also:
- Constant Field Values
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AP_TIMESTAMP_UPSTREAM_CORRELATOR_MIN
public static final int AP_TIMESTAMP_UPSTREAM_CORRELATOR_MIN
- See Also:
- Constant Field Values
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AP_TIMESTAMP_UPSTREAM_CORRELATOR_INPUT_MIN
public static final int AP_TIMESTAMP_UPSTREAM_CORRELATOR_INPUT_MIN
- See Also:
- Constant Field Values
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AP_TIMESTAMP_UPSTREAM_CORRELATOR_INPUT_MAX
public static final int AP_TIMESTAMP_UPSTREAM_CORRELATOR_INPUT_MAX
- See Also:
- Constant Field Values
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AP_TIMESTAMP_UPSTREAM_CORRELATOR_APPLICATION_MIN
public static final int AP_TIMESTAMP_UPSTREAM_CORRELATOR_APPLICATION_MIN
- See Also:
- Constant Field Values
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AP_TIMESTAMP_UPSTREAM_CORRELATOR_APPLICATION_MAX
public static final int AP_TIMESTAMP_UPSTREAM_CORRELATOR_APPLICATION_MAX
- See Also:
- Constant Field Values
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AP_TIMESTAMP_UPSTREAM_CORRELATOR_RESERVED2_MIN
public static final int AP_TIMESTAMP_UPSTREAM_CORRELATOR_RESERVED2_MIN
- See Also:
- Constant Field Values
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AP_TIMESTAMP_UPSTREAM_CORRELATOR_RESERVED2_MAX
public static final int AP_TIMESTAMP_UPSTREAM_CORRELATOR_RESERVED2_MAX
- See Also:
- Constant Field Values
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AP_TIMESTAMP_UPSTREAM_CORRELATOR_RESERVED1_MIN
public static final int AP_TIMESTAMP_UPSTREAM_CORRELATOR_RESERVED1_MIN
- See Also:
- Constant Field Values
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AP_TIMESTAMP_UPSTREAM_CORRELATOR_RESERVED1_MAX
public static final int AP_TIMESTAMP_UPSTREAM_CORRELATOR_RESERVED1_MAX
- See Also:
- Constant Field Values
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AP_TIMESTAMP_UPSTREAM_CORRELATOR_SERVICE_MONITOR_MIN
public static final int AP_TIMESTAMP_UPSTREAM_CORRELATOR_SERVICE_MONITOR_MIN
- See Also:
- Constant Field Values
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AP_TIMESTAMP_UPSTREAM_CORRELATOR_SERVICE_MONITOR_MAX
public static final int AP_TIMESTAMP_UPSTREAM_CORRELATOR_SERVICE_MONITOR_MAX
- See Also:
- Constant Field Values
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AP_TIMESTAMP_UPSTREAM_CORRELATOR_OUTPUT_MIN
public static final int AP_TIMESTAMP_UPSTREAM_CORRELATOR_OUTPUT_MIN
- See Also:
- Constant Field Values
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AP_TIMESTAMP_UPSTREAM_CORRELATOR_OUTPUT_MAX
public static final int AP_TIMESTAMP_UPSTREAM_CORRELATOR_OUTPUT_MAX
- See Also:
- Constant Field Values
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AP_TIMESTAMP_UPSTREAM_CORRELATOR_MAX
public static final int AP_TIMESTAMP_UPSTREAM_CORRELATOR_MAX
- See Also:
- Constant Field Values
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AP_TIMESTAMP_UPSTREAM_MERGER_MIN
public static final int AP_TIMESTAMP_UPSTREAM_MERGER_MIN
- See Also:
- Constant Field Values
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AP_TIMESTAMP_UPSTREAM_MERGER_MAX
public static final int AP_TIMESTAMP_UPSTREAM_MERGER_MAX
- See Also:
- Constant Field Values
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AP_TIMESTAMP_UPSTREAM_IAF_MIN
public static final int AP_TIMESTAMP_UPSTREAM_IAF_MIN
- See Also:
- Constant Field Values
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AP_TIMESTAMP_UPSTREAM_IAF_APAMA_ENTRY
public static final int AP_TIMESTAMP_UPSTREAM_IAF_APAMA_ENTRY
Not currently implemented, do not use.- See Also:
- Constant Field Values
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AP_TIMESTAMP_UPSTREAM_IAF_APAMA_EXIT
public static final int AP_TIMESTAMP_UPSTREAM_IAF_APAMA_EXIT
Not currently implemented, do not use.- See Also:
- Constant Field Values
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AP_TIMESTAMP_UPSTREAM_IAF_MAPPER_ENTRY
public static final int AP_TIMESTAMP_UPSTREAM_IAF_MAPPER_ENTRY
Represents the time an Apama event from the Correlator enters the semantic mapper.- See Also:
- Constant Field Values
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AP_TIMESTAMP_UPSTREAM_IAF_MAPPER_EXIT
public static final int AP_TIMESTAMP_UPSTREAM_IAF_MAPPER_EXIT
Represents the time an Apama event from the Correlator leaves the semantic mapper.- See Also:
- Constant Field Values
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AP_TIMESTAMP_UPSTREAM_IAF_ENCODER_ENTRY
public static final int AP_TIMESTAMP_UPSTREAM_IAF_ENCODER_ENTRY
Optionally implemented by a codec, represents the time a normalised event from the semantic mapper enters the codec.- See Also:
- Constant Field Values
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AP_TIMESTAMP_UPSTREAM_IAF_ENCODER_EXIT
public static final int AP_TIMESTAMP_UPSTREAM_IAF_ENCODER_EXIT
Optionally implemented by a codec, represents the time a normalised event leaves the codec.- See Also:
- Constant Field Values
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AP_TIMESTAMP_UPSTREAM_IAF_TRANSPORT_ENTRY
public static final int AP_TIMESTAMP_UPSTREAM_IAF_TRANSPORT_ENTRY
Optionally implemented by a transport, represents the time a message from the codec enters the transport.- See Also:
- Constant Field Values
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AP_TIMESTAMP_UPSTREAM_IAF_TRANSPORT_EXIT
public static final int AP_TIMESTAMP_UPSTREAM_IAF_TRANSPORT_EXIT
Optionally implemented by a transport, represents the time a message leaves the transport and is to sent to the external system.- See Also:
- Constant Field Values
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AP_TIMESTAMP_UPSTREAM_IAF_MAX
public static final int AP_TIMESTAMP_UPSTREAM_IAF_MAX
- See Also:
- Constant Field Values
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Method Detail
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size
public int size()
Get the number of elements (name-time pairs) currently stored by the event.- Specified by:
size
in interfacejava.util.Map<java.lang.Integer,java.lang.Double>
- Returns:
- The number of elements in the event
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addNow
public void addNow(java.lang.Integer index) throws TimestampSetException
Add a new index-time pair to the event. The pair will have the current (relative) time. If a timestamp with the same index already exists, it will NOT be overwritten.- Parameters:
index
- The name of the new element- Throws:
TimestampSetException
- Thrown if index=null
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addTime
public void addTime(java.lang.Integer index, java.lang.Double theTime) throws TimestampSetException
Add a new index-time pair to the timestamp. The given index and time will be copied into the timestamp. If a timestamp with the same index already exists, it will NOT be overwritten.- Parameters:
index
- The index of the new elementtheTime
- The time of the new element- Throws:
TimestampSetException
- Thrown if index=null
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replace
@Deprecated public java.lang.Double replace(java.lang.Integer index, java.lang.Double newTime) throws TimestampSetException
Deprecated.This method has been deprecated to avoid confusion with Map.replace; please update code to useput(Integer, Double)
instead.Identical toput(Integer, Double)
.This method does not have the same semantics as the new Map.replace method introduced in Java 1.8, and has therefore been deprecated to avoid confusion.
- Specified by:
replace
in interfacejava.util.Map<java.lang.Integer,java.lang.Double>
- Throws:
TimestampSetException
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replaceWithNow
@Deprecated public void replaceWithNow(java.lang.Integer index) throws TimestampSetException
Deprecated.This method has been deprecated to avoid confusion with Map.replace; please update code to useputNow(Integer)
instead.Identical toputNow(Integer)
.This method does not have the same semantics as the new Map.replace method introduced in Java 1.8, and has therefore been deprecated to avoid confusion.
- Throws:
TimestampSetException
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putNow
public void putNow(java.lang.Integer index) throws TimestampSetException
Set the time of a specified timestamp in the timestamp set to current time, regardless of whether a timestamp with the given index already exists.- Parameters:
index
- The name of the element to be updated- Throws:
TimestampSetException
- Thrown if index=null
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findTime
public java.lang.Double findTime(java.lang.Integer index)
Search for a named element in the timestamp set and return its time.- Parameters:
index
- The element name to search for- Returns:
- The time associated with the given name, or
null
if no matching element could be found. Note that this function cannot distinguish between an element with a missing time and an element that does not exist -null
will be returned in either case.
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findTimeAndRemove
public java.lang.Double findTimeAndRemove(java.lang.Integer index)
Search for a named element in the timestamp set and return its time. If found, the element will also be removed from the event.- Parameters:
index
- The element name to search for- Returns:
- The time associated with the given name, or
null
if no matching element could be found. If the element was found, it will be deleted from the event. Note that this function cannot distinguish between an element with a missing time and an element that does not exist -null
will be returned in either case.
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toString
public java.lang.String toString()
Return a printable string representation of the timestamp set.- Overrides:
toString
in classjava.lang.Object
- Returns:
- Printable string representation of the timestamp set. The time returned may differ between implementations, and is not the same as the time returned by the C implementation of this class.
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iterator
public java.util.Iterator<java.util.Map.Entry<java.lang.Integer,java.lang.Double>> iterator()
Returns a standard Java Iterator over the contents of the TimestampSet usingMap.Entry
objects. If the map is modified while an iteration over the set is in progress (except through the iterator's own remove operation, or through the setTime operation on a map entry returned by the iterator) the results of the iteration are undefined.Instead of calling this method directly, it may be easier to use the following construction:
for (Map.Entry
element: TimestampSet) { ... } - Specified by:
iterator
in interfacejava.lang.Iterable<java.util.Map.Entry<java.lang.Integer,java.lang.Double>>
- Returns:
- An iterator over the contents of the TimestampSet.
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put
public java.lang.Double put(java.lang.Integer index, java.lang.Double time) throws TimestampSetException
Adds or replaces the specified (index,time) pair in the underlying map- Specified by:
put
in interfacejava.util.Map<java.lang.Integer,java.lang.Double>
- Parameters:
index
- Any stringtime
- Any string ornull
- Returns:
- Previous time associated with index (which could be
null
), ornull
if the index did not exist - Throws:
TimestampSetException
- If index=null
- See Also:
Map.put(Object, Object)
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entrySet
public java.util.Set<java.util.Map.Entry<java.lang.Integer,java.lang.Double>> entrySet()
- Specified by:
entrySet
in interfacejava.util.Map<java.lang.Integer,java.lang.Double>
- Returns:
- A set view of the (index,time) pairs making up the TimestampSet.
- See Also:
Map.entrySet()
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keySet
public java.util.Set<java.lang.Integer> keySet()
- Specified by:
keySet
in interfacejava.util.Map<java.lang.Integer,java.lang.Double>
- Returns:
- A set view of the indices of the TimestampSet.
- See Also:
Map.keySet()
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clear
public void clear()
Removes all mappings from this map.- Specified by:
clear
in interfacejava.util.Map<java.lang.Integer,java.lang.Double>
- See Also:
Map.clear()
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containsKey
public boolean containsKey(java.lang.Object index)
Returns true if this map contains the specified key- Specified by:
containsKey
in interfacejava.util.Map<java.lang.Integer,java.lang.Double>
- Parameters:
index
- The key whose presence in this map is to be tested- Returns:
- true if this map contains the key
- See Also:
Map.containsKey(Object)
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containsValue
public boolean containsValue(java.lang.Object time)
Returns true if this map maps one or more names to the specified time.- Specified by:
containsValue
in interfacejava.util.Map<java.lang.Integer,java.lang.Double>
- Parameters:
time
- time whose presence in this map is to be tested.- Returns:
- true if this map maps one or more names to the specified time.
- See Also:
Map.containsValue(Object)
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get
public java.lang.Double get(java.lang.Object index)
Returns the time to which the specified name is mapped, or null if the map contains no mapping for this index. A return time of null does not necessarily indicate that the map contains no mapping for the index; it is also possible that the map explicitly maps the index to null. The containsIndex method may be used to distinguish these two cases.- Specified by:
get
in interfacejava.util.Map<java.lang.Integer,java.lang.Double>
- Parameters:
index
- the index whose associated time is to be returned.- Returns:
- the time to which this map maps the specified index, or null if the map contains no mapping for this index.
- See Also:
Map.put(Object, Object)
,Map.get(Object)
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isEmpty
public boolean isEmpty()
Returns true if this map contains no index-time mappings.- Specified by:
isEmpty
in interfacejava.util.Map<java.lang.Integer,java.lang.Double>
- Returns:
- true if this map contains no index-time mappings.
- See Also:
Map.isEmpty()
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putAll
public void putAll(java.util.Map<? extends java.lang.Integer,? extends java.lang.Double> m)
Copies all of the mappings from the specified map to this map These mappings will replace any mappings that this map had for any of the indices currently in the specified map.- Specified by:
putAll
in interfacejava.util.Map<java.lang.Integer,java.lang.Double>
- Parameters:
m
- mappings to be stored in this map.- Throws:
java.lang.NullPointerException
- if the specified map is null.- See Also:
Map.putAll(Map)
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remove
public java.lang.Double remove(java.lang.Object index)
Removes the mapping for this index from this map if present.- Specified by:
remove
in interfacejava.util.Map<java.lang.Integer,java.lang.Double>
- Parameters:
index
- index whose mapping is to be removed from the map.- Returns:
- previous time associated with specified index, or null if there was no mapping for index. A null return can also indicate that the map previously associated null with the specified index.
- See Also:
Map.remove(Object)
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values
public java.util.Collection<java.lang.Double> values()
Returns a collection view of the times contained in this map.- Specified by:
values
in interfacejava.util.Map<java.lang.Integer,java.lang.Double>
- Returns:
- a collection view of the times contained in this map.
- See Also:
Map.values()
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getMicroTime
public static double getMicroTime()
Get the current microsecond-accurate relative timestamp.- Returns:
- The current timestamp
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