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## Package org.eclipse.birt.report.model.api.metadata

Defines the elements, properties, types, structures and slots in the Report Object Model.

See:
Description

Interface Summary
IArgumentInfo | Represents the definition of argument.
IArgumentInfoList | Represents an optional argument list of a method.
IChoice | Describes the options for a property value.
IChoiceSet | Represents a set of choices on a predefined or user defined property type or property definition.
IClassInfo | Represents the script object definition.
IColorConstants | The interface for constants of colors used in BIRT.
IElementDefn | Interface for a report element definition.
IElementPropertyDefn | Interface of the Meta-data information for an element property or an extension model property.
ILocalizableInfo | Represents the abstract definition which can be localized.
IMemberInfo | Represents the definition of class member.
IMetaDataDictionary | Global, shared dictionary of design meta data.
IMetaLogger | Interface to handle meta-data errors during initialization.
IMethodInfo | Represents the method information for both class and element.
IObjectDefn | Base Interface for methods common to elements and structures.
IPropertyDefn | Base Interface for both element property, extension model property and structure member definitions.
IPropertyType | Base class for the meta-data for property types.
ISlotDefn | Interface for the definition of a slot within an element.
IStructureDefn | Interface for the definition of a property structure: an object that is "managed" by the model to allow generic member access and undo/redo support for updates.
ITemplateMethodInfo | Represents the method information that can provide code template.
MetaDataConstants | Provides constants used in the meta-data package.

Class Summary
ArgumentInfo | Represents the definition of argument.
ArgumentInfoList | Represents an optional argument list of a method.
ClassInfo | Represents the script object definition.
DimensionValue | Representation of a dimension property value.
MemberInfo | Represents the definition of class member.
MetaDataReaderException | Exception thrown if an error occurs when reading the meta-data description file or the building the meta-data description.
MethodInfo | Represents the method information for both class and element.
PropertyValueException | Indicates an invalid property value.
UserChoice | Describes the user defined choices for a user defined property.
ValidationValueException | Indicates an invalid validation value.

## Package org.eclipse.birt.report.model.api.metadata Description

Defines the elements, properties, types, structures and slots in the Report Object Model.

## Package Specification

The Design Engine is based on a series of definitions that provide "meta-data" about the various objects that make up a report design. The definitions include:

Property types
  define data types for properties such as string, URI, expression, etc.
Properties
  define the attributes of report elements.
Report elements
  define objects that combine to describe the report.
Choices
  available to properties such as colors, text alignment and other attributes with a fixed set of values.
Slots
  define how elements contain other elements.
Standard styles
  defined by the product itself.

The definition information resides in the meta-data dictionary. There is one instance of the dictionary shared by all designs. The meta-data is invariant across designs.

## Related Documentation

See Also:
  `IElementDefn`, ``

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