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## org.eclipse.birt.data.engine.api.aggregation
Interface IParameterDefn

    public interface IParameterDefn

Method Summary
`java.lang.String` | `getDescription()` get the description of this parameter.
`java.lang.String` | `getDisplayName()` get the display name of this parameter.
`java.lang.String` | `getName()` get the native name of this parameter.
`boolean` | `isDataField()` to indicate whether this parameter reference to a column or binding of BIRT.
`boolean` | `isOptional()` to indicate whether this parameter is optional.
`boolean` | `supportDataType(int dataType)` check whether this parameter support specified data type.

Method Detail

### getName

    java.lang.String getName()

  get the native name of this parameter.

  Returns:

### isOptional

    boolean isOptional()

  to indicate whether this parameter is optional.

  Returns:

### isDataField

    boolean isDataField()

  to indicate whether this parameter reference to a column or binding of BIRT.

  Returns:

### getDisplayName

    java.lang.String getDisplayName()

  get the display name of this parameter.

  Returns:

### getDescription

    java.lang.String getDescription()

  get the description of this parameter.

  Returns:

### supportDataType

    boolean supportDataType(int dataType)

  check whether this parameter support specified data type.

  Returns:

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