Package org.teiid.translator.accumulo

Class CountStarIterator

  • All Implemented Interfaces:
    org.apache.accumulo.core.iterators.SortedKeyValueIterator<org.apache.accumulo.core.data.Key,​org.apache.accumulo.core.data.Value>, org.apache.accumulo.core.iterators.YieldingKeyValueIterator<org.apache.accumulo.core.data.Key,​org.apache.accumulo.core.data.Value>
    public class CountStarIterator
extends org.apache.accumulo.core.iterators.WrappingIterator
    Implements aggregate function Count(*) over Accumulo

    • Field Summary

      Fields 
      Modifier and Type Field Description
      static String ALIAS  

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      org.apache.accumulo.core.iterators.SortedKeyValueIterator<org.apache.accumulo.core.data.Key,​org.apache.accumulo.core.data.Value> deepCopy​(org.apache.accumulo.core.iterators.IteratorEnvironment env)  
      org.apache.accumulo.core.data.Key getTopKey()  
      org.apache.accumulo.core.data.Value getTopValue()  
      boolean hasTop()  
      void init​(org.apache.accumulo.core.iterators.SortedKeyValueIterator<org.apache.accumulo.core.data.Key,​org.apache.accumulo.core.data.Value> source, Map<String,​String> options, org.apache.accumulo.core.iterators.IteratorEnvironment env)  
      void next()  
      void seek​(org.apache.accumulo.core.data.Range range, Collection<org.apache.accumulo.core.data.ByteSequence> columnFamilies, boolean inclusive)  

      • Methods inherited from class org.apache.accumulo.core.iterators.WrappingIterator

        getSource, setSource

      • Methods inherited from interface org.apache.accumulo.core.iterators.YieldingKeyValueIterator

        enableYielding

    • Constructor Detail

      • CountStarIterator

        public CountStarIterator()

    • Method Detail

      • init

        public void init​(org.apache.accumulo.core.iterators.SortedKeyValueIterator<org.apache.accumulo.core.data.Key,​org.apache.accumulo.core.data.Value> source,
                 Map<String,​String> options,
                 org.apache.accumulo.core.iterators.IteratorEnvironment env)
          throws IOException
        Specified by:
        init in interface org.apache.accumulo.core.iterators.SortedKeyValueIterator<org.apache.accumulo.core.data.Key,​org.apache.accumulo.core.data.Value>
        Overrides:
        init in class org.apache.accumulo.core.iterators.WrappingIterator
        Throws:
        IOException

      • deepCopy

        public org.apache.accumulo.core.iterators.SortedKeyValueIterator<org.apache.accumulo.core.data.Key,​org.apache.accumulo.core.data.Value> deepCopy​(org.apache.accumulo.core.iterators.IteratorEnvironment env)
        Specified by:
        deepCopy in interface org.apache.accumulo.core.iterators.SortedKeyValueIterator<org.apache.accumulo.core.data.Key,​org.apache.accumulo.core.data.Value>
        Overrides:
        deepCopy in class org.apache.accumulo.core.iterators.WrappingIterator

      • seek

        public void seek​(org.apache.accumulo.core.data.Range range,
                 Collection<org.apache.accumulo.core.data.ByteSequence> columnFamilies,
                 boolean inclusive)
          throws IOException
        Specified by:
        seek in interface org.apache.accumulo.core.iterators.SortedKeyValueIterator<org.apache.accumulo.core.data.Key,​org.apache.accumulo.core.data.Value>
        Overrides:
        seek in class org.apache.accumulo.core.iterators.WrappingIterator
        Throws:
        IOException

      • getTopValue

        public org.apache.accumulo.core.data.Value getTopValue()
        Specified by:
        getTopValue in interface org.apache.accumulo.core.iterators.SortedKeyValueIterator<org.apache.accumulo.core.data.Key,​org.apache.accumulo.core.data.Value>
        Overrides:
        getTopValue in class org.apache.accumulo.core.iterators.WrappingIterator

      • getTopKey

        public org.apache.accumulo.core.data.Key getTopKey()
        Specified by:
        getTopKey in interface org.apache.accumulo.core.iterators.SortedKeyValueIterator<org.apache.accumulo.core.data.Key,​org.apache.accumulo.core.data.Value>
        Overrides:
        getTopKey in class org.apache.accumulo.core.iterators.WrappingIterator

      • hasTop

        public boolean hasTop()
        Specified by:
        hasTop in interface org.apache.accumulo.core.iterators.SortedKeyValueIterator<org.apache.accumulo.core.data.Key,​org.apache.accumulo.core.data.Value>
        Overrides:
        hasTop in class org.apache.accumulo.core.iterators.WrappingIterator

      • next

        public void next()
          throws IOException
        Specified by:
        next in interface org.apache.accumulo.core.iterators.SortedKeyValueIterator<org.apache.accumulo.core.data.Key,​org.apache.accumulo.core.data.Value>
        Overrides:
        next in class org.apache.accumulo.core.iterators.WrappingIterator
        Throws:
        IOException