Package de.aristaflow.adept2.model.logmanagement

Class Column

java.lang.Object
de.aristaflow.adept2.model.logmanagement.Column
All Implemented Interfaces:
Serializable
public class Column extends Object implements Serializable
Represents a column in the entry schema of a log in the log management facility, aka. log manager

Columns may not contain an underscore _. Otherwise they may be legal SQL identifiers, which may depend on the actual DBMS. So it's a good idea to stick with the Latin alphabet and digits. Also the names id and refId may not be used because these identifiers are used internally.

Author:
Patrick Schmidt
See Also:

  • Field Details

    • ID_COLUMN

      public static final Column ID_COLUMN
      The ID column added to every log to identify the log entries.

    • REF_COLUMN

      public static final Column REF_COLUMN
      The referenced ID column added to every subschema of a log to identify parent log entry.

  • Constructor Details

    • Column

      public Column(String name, DataType dataType)
      Constructs a new Column with the specified data type.

      There are separate constructors for DataType.STRING and DataType.COMPLEX. This constructor cannot be used for these.

      Parameters:
      name - the name of the column
      dataType - the data type of the column

    • Column

      public Column(String name, int sizeHint)
      Constructs a string column with the specified size.
      Parameters:
      name - the name of the column
      sizeHint - the required number of characters

    • Column

      public Column(String name, Schema subSchema)
      Constructs a complex column with the specified subschema.
      Parameters:
      name - the name of the column
      subSchema - the subschema of the column

  • Method Details

    • getName

      public String getName()
      Returns the name of this column.
      Returns:
      the name of this column

    • getDataType

      public DataType getDataType()
      Returns the data type of this column.
      Returns:
      the data type of this column

    • getSubSchema

      public Schema getSubSchema()
      Returns the subschema of this column or null if the data type of this column is something else than DataType.COMPLEX.
      Returns:
      the subschema of this column or null

    • getSizeHint

      public int getSizeHint()
      Returns the size hint for this column. Currently this value is only used for DataType.STRING and indicates the required capacity when creating the required tables of a log.
      Returns:
      the size hint of this column

    • equals

      public boolean equals(Object obj)
      Overrides:
      equals in class Object

    • hashCode

      public int hashCode()
      Overrides:
      hashCode in class Object