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TIBCO Rendezvous® 8.8.0

# Update Array

Convenience Functions

## Declaration

    tibrv_status tibrvMsg_Updateelement_typeArray(
       tibrvMsg            message,
       const char*         fieldName,
       const element_type*    value,
       tibrv_u32           numElements);
    tibrv_status tibrvMsg_Updateelement_typeArrayEx(
       tibrvMsg            message,
       const char*         fieldName,
       const element_type*    value,
       tibrv_u32           numElements,
       tibrv_u16           fieldId);

## Purpose

Update a field containing an array value.

## Remarks

Each convenience function in this family locates a field (by name or identifier) and updates its data.

The type of the existing field (within the message) and the type of the updating `value` must match. The number of elements can change.

Pointer data previously extracted from the field remain valid and unchanged until the message is destroyed; that is, even updating the field’s value does not invalidate pointer data. (See Pointer Snapshot.)

Function Name | Element Type | Type Description
`tibrvMsg_Update` `I8Array` | `tibrv_``i8` | 8-bit integer array
`tibrvMsg_Update` `U8Array` | `tibrv_``u8` | 8-bit unsigned integer array
`tibrvMsg_Update` `I16Array` | `tibrv_``i16` | 16-bit integer array
`tibrvMsg_Update` `U16Array` | `tibrv_``u16` | 16-bit unsigned integer array
`tibrvMsg_Update` `I32Array` | `tibrv_``i32` | 32-bit integer array
`tibrvMsg_Update` `U32Array` | `tibrv_``u32` | 32-bit unsigned integer array
`tibrvMsg_Update` `I64Array` | `tibrv_``i64` | 64-bit integer array
`tibrvMsg_Update` `U64Array` | `tibrv_``u64` | 64-bit unsigned integer array
`tibrvMsg_Update` `F32Array` | `tibrv_``f32` | 32-bit floating point array
`tibrvMsg_Update` `F64Array` | `tibrv_``f64` | 64-bit floating point array
`tibrvMsg_Update` `MsgArray` | `tibrv_``Msg` | message array
`tibrvMsg_Update` `StringArray` | `char*` | string array

Parameter | Description
`message` | Update the specified field of this message.
`fieldName` | Update a field with this name.
`value` | Update the message field to this array value. The function copies the new array into the existing field.
`numElements` | When updating an array type, the program supplies the count of array elements in this parameter.
`fieldId` | Update the field with this identifier. Zero is a special value that signifies no field identifier. It is illegal to add a field that has both a `NULL` field name, and a non-zero field identifier.

## See Also

Field Names and Field Identifiers

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