- XML (Extensible Markup Language) Reader/Writer
- XML Quick Facts
- Workbench XML Reader Parameters
- Workbench XML Writer Parameters
- Feature Representation
- Mapping File Reference
- xfMap
- Reading the Input XML Document
- Mapping Rules
- Types of Mapping Rules
- Match and Except Expression
- Specifying Several Match Expressions for One Mapping Rule
- Limiting Mapping Rule Activation with Except Expressions
- Mapping Rule States (activation, execution, suspension, and de-activation)
- Using Force Elements During Mapping Rule Activation and Deactivation
- Search-sets
- Expression Elements (Extract and Literal)
- Expression Sequence
- Feature Mapping Rules
- FME Feature Construction
- Feature Type Element
- Attributes Element
- FME Feature Construction (defining mapping rules under the <feature-content-map> element)
- Attribute Element (handling multiple values)
- Attribute Element (handling optional attributes)
- Attribute Element (sequenced attributes)
- Attribute Element (Nillable Attributes)
- Geometry Element
- Geometry Builder States (activation, execution, suspension, and de-activation)
- Geometry Construction
- Composite Geometry Builders
- Built-in Geometry Builders
- xml-point
- xml-point-xy
- xml-line
- xml-area
- xml-donut
- xml-aggregate
- xml-box
- xml-text
- xml-path
- xml-arc
- xml-arc-by-center-point
- xml-elliptical-arc
- xml-circle
- xml-polygon
- xml-face
- xml-composite-surface
- xml-triangulated-surface
- xml-enclosed-surface
- xml-composite-solid
- xml-multi-point
- xml-multi-curve
- xml-multi-area
- xml-multi-text
- xml-multi-surface
- xml-multi-solid
- xml-null
- xml-reverse-geometry
- xml-geodesic-string
- fme-geometry
- Mapping Segmented Geometric Information
- Geometry Traits (trait element)
- FME Feature Construction (constructing multiple features at a time)
- Structure Element
- References Element
- Apply References Element
- Group Mapping Rules
- Reference Mapping Rules
- Mapping Rules (Optional Elements)
- More Expression Elements
- FME Schema Features
- Reading the Input XML Document
Since the XML Reader is an FME plug-in reader, it must be able to return FME schema features, either to FME or to a third-party application through FME Objects. An xfMap document may contain an optional <schema-type> element that instructs the XML Reader on how the FME schema features should be constructed. On default, if the <schema-type> element is not present, the schema features are constructed by scanning all of the FME features returned by the XML Reader. Currently, the XML Reader can construct FME schema features by three different methods which are specified through the <schema-type> element’s child element.
If the <schema-type> element is present, then it must contain one of the following child elements:
- <scan> element - this is the XML Reader’s default method for constructing schema features. If the <schema-type> element is not present in an xfMap document, then this method is assumed.
- <generate> element - this element contains two attributes, the xfMap and document attributes, that specify the XML document with the schema feature information and the xfMap document which maps that information into FME schema features.
- <inline> element - this element can contain zero or more <schema-feature> child elements. A <schema-feature> element represents an FME schema feature explicitly; it contains a type attribute that specifies a schema feature’s feature type, and zero or more <schema-attribute> elements that specify the schema feature’s attributes and attribute types.
The following sections describe each element.