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MySQL NDB Cluster API Developer Guide
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4.3.2.1 Column

Annotation for a column in the database.

4.3.2.1.1 Synopsis
 @Target(value={java.lang.annotation.ElementType.FIELD, java.lang.annotation.ElementType.METHOD}) @Retention(value=java.lang.annotation.RetentionPolicy.RUNTIME) public @interface Column {
  public String name ;
  public String allowsNull ;
  public String defaultValue ;
}
4.3.2.1.2 allowsNull

Whether the column allows null values to be inserted. This overrides the database definition and requires that the application provide non-null values for the database column.

Table 4.77 allowsNull

Parameter Description
return whether the column allows null values to be inserted

4.3.2.1.3 defaultValue

Default value for this column.

Table 4.78 defaultValue

Parameter Description
return the default value for this column

4.3.2.1.4 name

Name of the column.

Table 4.79 name

Parameter Description
return the name of the column