org.heigit.ohsome.oshdb.api.generic.OSHDBCombinedIndex<U,V>

Type Parameters:: U - the type of the fist part of the index; V - the type of the second part of the index

All Implemented Interfaces:: Serializable, Comparable<OSHDBCombinedIndex<U,V>>

public class OSHDBCombinedIndex & Serializable,V extends Comparable<V> & Serializable> extends Object implements Comparable<OSHDBCombinedIndex<U,V>>, Serializable

A data type for an index ("map key") consisting of two independent variables.

See Also:

Constructor Details
- OSHDBCombinedIndex
  
  public OSHDBCombinedIndex(U index1, V index2)
Method Details
- getFirstIndex
 
 public U getFirstIndex()
- getSecondIndex
 
 public V getSecondIndex()
- compareTo
 
 public int compareTo(@NotNull @NotNull OSHDBCombinedIndex<U,V> other)
 
 Specified by:
 
 compareTo in interface Comparable & Serializable>
- equals
 
 public boolean equals(Object obj)
 
 Overrides:
 
 equals in class Object
- hashCode
 
 public int hashCode()
 
 Overrides:
 
 hashCode in class Object
- toString
 
 public String toString()
 
 Overrides:
 
 toString in class Object
- nest
 
 public static <A, U extends Comparable & Serializable, V extends Comparable<V> & Serializable> SortedMap<U,SortedMap<V,A>> nest(Map<OSHDBCombinedIndex<U,V>,A> result)
 
 Helper function that converts the dual-index data structure returned by aggregation operations on this object to a nested Map structure, which can be easier to process further on.
 This version creates a map for each index value, containing maps containing results by timestamps.
 
 Type Parameters:
 
 A - an arbitrary data type, used for the data value items
 
 U - an arbitrary data type, used for the index'es key items
 
 V - an arbitrary data type, used for the index'es key items
 
 Parameters:
 
 result - the "flat" result data structure that should be converted to a nested structure
 
 Returns:
 
 a nested data structure: for each index part there is a separate level of nested maps

Class OSHDBCombinedIndex<U extends Comparable<U> & Serializable,V extends Comparable<V> & Serializable>

Constructor Summary