Package net.ontopia.persistence.query.sql

Interface SQLAggregateIF

All Known Implementing Classes:
SQLAggregate, SQLAggregateReference
public interface SQLAggregateIF
INTERNAL: Represents an aggregate function in a SQL query.

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final int
    COUNT
    INTERNAL: Constant referring to the COUNT aggregate function.

  • Method Summary

    Modifier and Type
    Method
    Description
    String
    getAlias()
    INTERNAL: The column alias to use if this value is included in the projection.
    SQLAggregateIF
    getReference()
    INTERNAL: Returns the referenced aggregate if one exists.
    int
    getType()
    INTERNAL: Returns the aggregate function type indicated by one of the constants in the SQLAggregateIF interface.
    SQLValueIF
    getValue()
    INTERNAL: Returns the SQLValueIF that the aggregate function is to be evaluated against.
    boolean
    isReference()
    INTERNAL: Returns true if this aggregate is a reference to another.
    void
    setAlias(String alias)
    INTERNAL: Sets the column alias.
    void
    setValue(SQLValueIF value)
    INTERNAL: Sets the SQLValueIF that the aggregate function is to be evaluated against.

  • Field Details

    • COUNT

      static final int COUNT
      INTERNAL: Constant referring to the COUNT aggregate function.
      See Also:

  • Method Details

    • getType

      int getType()
      INTERNAL: Returns the aggregate function type indicated by one of the constants in the SQLAggregateIF interface.

    • getValue

      SQLValueIF getValue()
      INTERNAL: Returns the SQLValueIF that the aggregate function is to be evaluated against.

    • setValue

      void setValue(SQLValueIF value)
      INTERNAL: Sets the SQLValueIF that the aggregate function is to be evaluated against.

    • getAlias

      String getAlias()
      INTERNAL: The column alias to use if this value is included in the projection. The SQL select syntax is typically like "select value as from foo".

    • setAlias

      void setAlias(String alias)
      INTERNAL: Sets the column alias.

    • isReference

      boolean isReference()
      INTERNAL: Returns true if this aggregate is a reference to another.

    • getReference

      SQLAggregateIF getReference()
      INTERNAL: Returns the referenced aggregate if one exists.