IBM Switch 15 Manuale Utente Scaricare il pdf (Pagina 103)

Building Streams

Step 3: Replace the template source node.

Using the Data Mapping option o n the pop-up menu

for the templa

te source node, click Select Replacement Node, then select the source node for

the replacement data.

Figure 5-45

Selecting a r

eplacement source node

Step 4: Check mapped fields.

In the dialog box that opens, c heck that the softw are is mapping ﬁelds

properly

from the replacement data source to the stream. Any unmapped essential ﬁelds are

display ed in r ed. These ﬁelds are used in stream operations and must be replaced with a sim ilar

ﬁeld in the new data source in order for downstream operations to function properly. For more

informa t

ion, see the topic Examin ing Mapped F ields on p. 95.

After usin g the dialog box to ensure that all essential ﬁelds are properly mapped, the old data

source is disconnected and the new data source is conne cted to the stream using a Filter node

called Ma

p. This Filter node directs the actual mapp ing of ﬁelds in t he stream. An Unmap Filter

node is also included on the stream canvas. The Unmap Filter node can b e used to reverse ﬁeld

name mapping by adding it to the stream. It will undo the mapped ﬁelds, but note t hat you will

have to e

dit any downstream terminal nodes to r eselect the ﬁelds and overlays.

Figure 5-46

New data source successfully mapped to the stream

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IBM Switch 15 Manuale Utente Pagina 103