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## org.apache.poi.ss.formula.function
Class FunctionMetadataRegistry

    java.lang.Object
      org.apache.poi.ss.formula.function.FunctionMetadataRegistry

    public final class FunctionMetadataRegistry

extends java.lang.Object

Allows clients to get `FunctionMetadata` instances for any built-in function of Excel.

Author:
  Josh Micich

Field Summary
`static int` | `FUNCTION_INDEX_CHOOSE`
`static short` | `FUNCTION_INDEX_EXTERNAL`
`static int` | `FUNCTION_INDEX_IF`
`static short` | `FUNCTION_INDEX_INDIRECT`
`static short` | `FUNCTION_INDEX_SUM`
`static java.lang.String` | `FUNCTION_NAME_IF` The name of the IF function (i.e.

Method Summary
`static FunctionMetadata` | `getFunctionByIndex(int index)`
`static FunctionMetadata` | `getFunctionByName(java.lang.String name)`
`static short` | `lookupIndexByName(java.lang.String name)` Resolves a built-in function index.

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

Field Detail

### FUNCTION_NAME_IF

    public static final java.lang.String FUNCTION_NAME_IF

  The name of the IF function (i.e. "IF"). Extracted as a constant for clarity.

  See Also:
    Constant Field Values

### FUNCTION_INDEX_IF

    public static final int FUNCTION_INDEX_IF

See Also:
  Constant Field Values

### FUNCTION_INDEX_SUM

    public static final short FUNCTION_INDEX_SUM

See Also:
  Constant Field Values

### FUNCTION_INDEX_CHOOSE

    public static final int FUNCTION_INDEX_CHOOSE

See Also:
  Constant Field Values

### FUNCTION_INDEX_INDIRECT

    public static final short FUNCTION_INDEX_INDIRECT

See Also:
  Constant Field Values

### FUNCTION_INDEX_EXTERNAL

    public static final short FUNCTION_INDEX_EXTERNAL

See Also:
  Constant Field Values

Method Detail

### getFunctionByIndex

    public static FunctionMetadata getFunctionByIndex(int index)

### lookupIndexByName

    public static short lookupIndexByName(java.lang.String name)

  Resolves a built-in function index.

  Parameters:
    `name` - uppercase function name
  Returns:
    a negative value if the function name is not found. This typically occurs for external functions.

### getFunctionByName

    public static FunctionMetadata getFunctionByName(java.lang.String name)

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