## org.apache.poi.ss.formula.functions
Class Match

    java.lang.Object
      org.apache.poi.ss.formula.functions.Match

All Implemented Interfaces:
  Function, Function2Arg, Function3Arg

    public final class Match

extends java.lang.Object

Implementation for the MATCH() Excel function.

Syntax:
MATCH(lookup_value, lookup_array, match_type)

Returns a 1-based index specifying at what position in the lookup_array the specified lookup_value is found.

Specific matching behaviour can be modified with the optional match_type parameter.

Value | Matching Behaviour
--- | ---
1 | (default) find the largest value that is less than or equal to lookup_value. The lookup_array must be in ascending order*.
0 | find the first value that is exactly equal to lookup_value. The lookup_array can be in any order.
-1 | find the smallest value that is greater than or equal to lookup_value. The lookup_array must be in descending order*.

* Note regarding order - For the match_type cases that require the lookup_array to be ordered, MATCH() can produce incorrect results if this requirement is not met. Observed behaviour in Excel is to return the lowest index value for which every item after that index breaks the match rule.
The (ascending) sort order expected by MATCH() is:
numbers (low to high), strings (A to Z), boolean (FALSE to TRUE)
MATCH() ignores all elements in the lookup_array with a different type to the lookup_value. Type conversion of the lookup_array elements is never performed.

Author:
  Josh Micich

Constructor Summary
`Match()`

Method Summary
`ValueEval` `evaluate(int srcRowIndex, int srcColumnIndex, ValueEval arg0, ValueEval arg1)` see `Function.evaluate(ValueEval[], int, int)`
`ValueEval` `evaluate(int srcRowIndex, int srcColumnIndex, ValueEval arg0, ValueEval arg1, ValueEval arg2)` see `Function.evaluate(ValueEval[], int, int)`
`ValueEval` `evaluate(ValueEval[] args, int srcRowIndex, int srcColumnIndex)`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### Match

    public Match()

Method Detail

### evaluate

    public ValueEval evaluate(int srcRowIndex,
                              int srcColumnIndex,
                              ValueEval arg0,
                              ValueEval arg1)

  Description copied from interface: `Function2Arg`
  see `Function.evaluate(ValueEval[], int, int)`

### evaluate

    public ValueEval evaluate(int srcRowIndex,
                              int srcColumnIndex,
                              ValueEval arg0,
                              ValueEval arg1,
                              ValueEval arg2)

  Description copied from interface: `Function3Arg`
  see `Function.evaluate(ValueEval[], int, int)`

### evaluate

    public final ValueEval evaluate(ValueEval[] args,
                                    int srcRowIndex,
                                    int srcColumnIndex)

  Specified by:
    `evaluate` in interface `Function`
  Parameters:
    `args` - the evaluated function arguments. Empty values are represented with `BlankEval` or `MissingArgEval`, never `null`.
    `srcRowIndex` - row index of the cell containing the formula under evaluation
    `srcColumnIndex` - column index of the cell containing the formula under evaluation
  Returns:
    The evaluated result, possibly an `ErrorEval`, never `null`. Note - Excel uses the error code #NUM! instead of IEEE NaN, so when numeric functions evaluate to `Double.NaN` be sure to translate the result to `ErrorEval.NUM_ERROR`.

Copyright 2012 The Apache Software Foundation or its licensors, as applicable.