Preface
Introduction to Data Transformation
- Data Transformation Overview
- Data Transformation Process Architecture
- Data Transformation Components
Data Processor Transformation
- Data Processor Transformation Overview
- Data Processor Transformation Views
- Data Processor Transformation Ports
- Startup Component
- References
- Data Processor Transformation Settings
- Events
  - Event Types
  - Data Processor Events View
- Logs
- Data Processor Transformation Development
- Data Processor Transformation Export and Import
- Data Processor Transformation Validation
  - Using a Speed-enhanced Data Transformation Engine for VRL Validations
- Data Processor Transformation in a Non-native Environment
Wizard Input and Output Formats
- Wizard Input and Output Formats Overview
- COBOL Processing Library
- JSON
- XML
  - Creating a Transformation that Transforms XML
Relational Input and Output
- Relational Input and Output Overview
- Relational Input
- Relational Output
Using the IntelliScript Editor
- IntelliScript Editor Overview
  - Creating a Script
- Opening an IntelliScript Editor
- Editing Procedures
- IntelliScript Editor Menus
XMap
- XMap Overview
- XMap Schemas
- Mapping Statements
- XPath Expressions
- XMap Variables
  - Creating a Variable in the XMap Editor
- XMap Example
Libraries
- Libraries Overview
- Library Structure
- Element Properties
- Library Management
- Edit Libraries with the Library Editor
- Edit Libraries with the IntelliScript Editor
Schema Object
- Schema Object Overview
- Schema Files
- Schema Object Overview View
- Schema Object Schema View
- Schema Object Advanced View
- Creating a Schema Object
- Schema Updates
  - Schema Synchronization
  - Schema File Edits
    - Setting a Default Schema File Editor
    - Editing a Schema File
Command Line Interface
- Command Line Interface Overview
- CM_console
Scripts
- Scripts Overview
- Script Components
- Script Component Properties
- Script Startup Components
  - Setting the Startup Component with the IntelliScript Editor
- Example Sources
- IntelliScript Editor
- Validate a Script
- Sample Scripts
  - Importing a Sample Script
Parsers
- Parsers Overview
- Platform-Independent Parsers
  - Newline Markers
  - File Paths
- Parser Component Reference
  - Parser
Script Ports
- Script Ports Overview
- Script Port Component Reference
Document Processors
- Document Processors Overview
- Defining a Document Processor
  - Display of Document Processor Output
- Document Processor Component Reference
- TextML XML Schema
- PdfToTxt_4 Table Configuration Editor
  - Editor Options
  - PDF Conversion Example
    - Configuring the First Table
    - Configuring the Second Table
Formats
- Formats Overview
- Standard Format Properties
- Format Component Reference
- Delimiters Component Reference
- Format Preprocessor Component Reference
  - HtmlProcessor
  - RtfProcessor
Data Holders
- Data Holders Overview
- XML Schemas
- Using a Schema to Map Anchors
- Generating Valid XML
  - Role of Schemas in Parsing
  - Role of Schemas in Serialization and Mapping
- Variables
- Variable Component Reference
  - Variable
- Multiple-Occurrence Data Holders
Anchors
- Anchors Overview
- Mapping Content Anchors to Data Holders
- Defining Anchors
- Standard Anchor Properties
- How a Parser Searches for Anchors
- Anchor Component Reference
- Searcher Component Reference
- Anchor Subcomponent Reference
Transformers
- Transformers Overview
- Defining Transformers
- Standard Transformer Properties
- Transformer Component Reference
Actions
- Actions Overview
- Standard Action Properties
- Action Component Reference
- Action Subcomponent Reference
Serializers
- Serializers Overview
- Serialization Anchors
  - Example of Serialization Anchors
  - Sequence of Serialization Anchors
- Standard Serializer Properties
- Serializer Component Reference
  - Serializer
- Serialization Anchor Component Reference
Mappers
- Creating a Mapper
- Components Nested within a Mapper
- Mapper Example
- Standard Mapper Properties
- Mapper Component Reference
  - Mapper
- Mapper Anchor Component Reference
Locators, Keys, and Indexing
- Overview of Locators, Keys, and Indexing
- Example of Locators
- Example of Indexing by Key
- Source and Target Properties
  - Source Property
  - Target Property
- Standard Locator and Key Properties
- Locator and Key Component Reference
Streamers
- Streamers Overview
- Text Streamers
- XML Streamers
- Standard Streamer Properties
- Streamer Component Reference
- Streamer Subcomponent Reference
Validators, Notifications, and Failure Handling
- Overview of Validators, Notifiers, and Failure Handling
- Failure Handling
  - Using the Optional Property to Handle Failures
  - Writing a Failure Message to the User Log
    - Configuring User Log Output
    - Viewing the User Log
- Validators
- Standard Validator Properties
- Validator Component Reference
- Notifications
- Notification Component Reference
Validation Rules
- Validation Rules Overview
- Validation Rules Element Reference
- Edit the Validation Rules in an External Editor
- Create a Validation Rules Object
- Import a Data Transformation Service with Validation Rules
Custom Script Components
- Custom Script Components Overview
- Custom Component Example
- Custom Component Properties
- Developing a Custom Component
  - Java Interface Example
  - Sample Custom Java Components
- Configuring a Custom Component
  - Sample Scripts Containing Custom Components

User Guide

10.5
- 10.5.6
- 10.5.2
- 10.4.0

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Multiple-Occurrence Data Holders

In a schema, you can use the

maxOccurs

attribute to set the maximum number of times that sibling elements can occur in an XML document. Likewise, you can define a variable that can occur either once or multiple times. An element or variable that can occur only once is called a single-occurrence data holder. An element or variable that can occur more than once is called a multiple-occurrence data holder.

Single- and multiple-occurrence data holders behave differently when the Script stores data in them, for example, when you map

Content

anchors to a data holder.

In a single-occurrence data holder, each assignment overwrites the preceding assignment.

In a multiple-occurrence data holder, each assignment generates a new occurrence of the data holder.

To understand this, suppose that a schema defines an XML element called

. If

maxOccurs = 1

, this is a single-occurrence data holder. If a Parser maps more than one

Content

anchor to the

element, the output contains only the final mapping.

Consider what would happen if you parse a source document that is a list of first names:

Jack Jennie Larissa

We assume that each name is a

Content

anchor mapped to

FirstName

. Each name overwrites the value of

FirstName

. The output contains only the mapping:

<FirstName>Larissa</FirstName>

Now suppose that

maxOccurs = unbounded

. This means that

FirstName

is a multiple-occurrence data holder. If you map multiple

Content

anchors to the element, the Parser generates a list of names. The output is:

<FirstName>Jack</FirstName>
<FirstName>Jennie</FirstName>
<FirstName>Larissa</FirstName>

The same principle applies to variables. If you map multiple anchors to a multiple-occurrence variable, each anchor generates a new occurrence of the variable. You can use this feature, for example, to prepare input for the

AppendListItems

and

CombineValues

actions, which concatenate the occurrences.

The behavior described here assumes that the multiple-occurrence data holder has a simple data type. Under certain circumstances, if the type is complex, each anchor might not generate a new occurrence. To control this behavior, you can use a locator. For more information, see Overview of Locators, Keys, and Indexing.

Data Holders

Attributes

Indexing

Destroying the Occurrences

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