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java.lang.Objectgr.uoa.di.madgik.grs.reader.RandomReaderIterator<T>
T - The type of Records as defined in the respective RandomReaderpublic class RandomReaderIterator<T extends Record>
A list iterator implementing class that can be used to iterate over the Records accessible through a
RandomReader instance
| Method Summary | |
|---|---|
void |
add(T o)
|
boolean |
hasNext()
|
boolean |
hasPrevious()
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T |
next()
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int |
nextIndex()
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T |
previous()
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int |
previousIndex()
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void |
remove()
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void |
set(T o)
|
| Methods inherited from class java.lang.Object |
|---|
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Method Detail |
|---|
public boolean hasNext()
If the status of the reader indicates that there may be more Records available but have not yet reached the
current reader through the respective mirroring procedure, then the ForwardReader.waitAvailable(long, java.util.concurrent.TimeUnit)
is used with the timeout values defined by RandomReader.getIteratorTimeout() and RandomReader.getIteratorTimeUnit()
hasNext in interface java.util.Iterator<T extends Record>hasNext in interface java.util.ListIterator<T extends Record>Iterator.hasNext()public T next()
the RandomReader.get(long, java.util.concurrent.TimeUnit) method is used to retrieve the next available
Record. The timeout values used are the ones defined by RandomReader.getIteratorTimeout() and
RandomReader.getIteratorTimeUnit(). in case there is some error during the Record retrieval or
the timeout expired, null is returned
next in interface java.util.Iterator<T extends Record>next in interface java.util.ListIterator<T extends Record>Iterator.next()public boolean hasPrevious()
If the status of the reader indicates that there are previous Records true is returned. Otherwise false
hasPrevious in interface java.util.ListIterator<T extends Record>Iterator.hasNext()public T previous()
The RandomReader.seek(long) method is used to move back the necessary number of records so that the next call to
RandomReader.get() will return the previous record. If some error occurs during the record retrieval, null is returned
previous in interface java.util.ListIterator<T extends Record>ListIterator.previous()public int nextIndex()
Operation is not supported. An IllegalStateException is thrown upon invocation
nextIndex in interface java.util.ListIterator<T extends Record>ListIterator.nextIndex()public int previousIndex()
Operation is not supported. An IllegalStateException is thrown upon invocation
previousIndex in interface java.util.ListIterator<T extends Record>ListIterator.previousIndex()public void remove()
Operation is not supported. An IllegalStateException is thrown upon invocation
remove in interface java.util.Iterator<T extends Record>remove in interface java.util.ListIterator<T extends Record>ListIterator.remove()public void set(T o)
Operation is not supported. An IllegalStateException is thrown upon invocation
set in interface java.util.ListIterator<T extends Record>ListIterator.set(java.lang.Object)public void add(T o)
Operation is not supported. An IllegalStateException is thrown upon invocation
add in interface java.util.ListIterator<T extends Record>ListIterator.add(java.lang.Object)
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