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TIBCO Rendezvous® 8.8.0

# Update Scalar

Convenience Methods

## Declaration

    void update(
        java.lang.String fieldName,
        scalar_type       data)
      throws TibrvException
    void update(
        java.lang.String fieldName,
        scalar_type       data,
        int              fieldId)
      throws TibrvException
    void updateUbits(
        java.lang.String fieldName,
        scalar_type       data)
      throws TibrvException
    void updateUbits(
        java.lang.String fieldName,
        scalar_type       data,
        int              fieldId)
      throws TibrvException

## Purpose

Update a field containing a scalar value.

## Method Forms

The convenience methods named `update``()` determine the field type from the numeric type of the data.

The convenience methods named `updateU` `nn``()` update unsigned integer fields, discarding the sign bit of a Java integer data value.

Method Name | Java Data Type | Field Type | Type Description
`update` | `boolean` | `TibrvMsg.``BOOL` | boolean
`update` | `float` | `TibrvMsg.``F32` | 32-bit floating point
`update` | `double` | `TibrvMsg.``F64` | 64-bit floating point
`update` | `byte` | `TibrvMsg.``I8` | 8-bit integer
`update` | `short` | `TibrvMsg.``I16` | 16-bit integer
`update` | `int` | `TibrvMsg.``I32` | 32-bit integer
`update` | `long` | `TibrvMsg.``I64` | 64-bit integer
`update` `U8` | `byte` | `TibrvMsg.``U8` | 8-bit unsigned integer
`update` `U16` | `short` | `TibrvMsg.``U16` | 16-bit unsigned integer
`update` `U32` | `int` | `TibrvMsg.``U32` | 32-bit unsigned integer
`update` `U64` | `long` | `TibrvMsg.``U64` | 64-bit unsigned integer

Parameter | Description
`data` | Update a field with this data value. It is illegal to add or update a field with `null` data.
`fieldName` | Update a field with this name. When absent, locate the field by identifier only.
`fieldId` | Update a field with this identifier. All field identifiers must be unique within each message. Zero is a special value, indicating no identifier. It is illegal to add a field that has both a `null` field name, and a non-zero field identifier.

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