Figure 41-1 shows the Map View of the XSLT Map Editor. The left pane contains the source tree representing the incoming source XML document. The source tree can be created from an XSD schema file or a sample XML file.

The center pane, or the canvas, is the place where you drop XPath expressions and functions that can be mapped to XSLT elements.

The right pane is the target pane representing a merged view of the XSLT being created, and the target tree that represents the target schema. The target tree can be created from an XSD schema file or a sample XML file.

The grayed nodes, in italics, in the target tree represent nodes that haven't been mapped yet. These nodes are not part of the XSLT, and are displayed for convenience. Once a grayed node is mapped, it appears in regular font, and gets represented in the XSLT map.

Map View supports drag-and-drop mappings from source tree to target tree. Map View also supports XPath function calls and XSLT statements such as xsl:if and xsl:for-each.

As Map View does not separate the XSLT statements from the target tree, it is limited to the following:

• Only one XSLT template rule with the match='/' attribute is supported.

• The following XSLT statements are supported: xsl:for-each, xsl:value-of, xsl:text, xsl:if, xsl:choose/when, xsl:variable and xsl:param.

Use the XSLT View for complex XSLT statements that require separating the XSLT statements from the target tree.