Package org.apache.empire.db.expr.compare

Class DBCompareParenthesisExpr

java.lang.Object
org.apache.empire.db.DBObject
org.apache.empire.db.DBExpr
org.apache.empire.db.expr.compare.DBCompareExpr
org.apache.empire.db.expr.compare.DBCompareParenthesisExpr
All Implemented Interfaces:
Unwrappable<DBCompareExpr>, DBPreparable
public class DBCompareParenthesisExpr extends DBCompareExpr implements Unwrappable<DBCompareExpr>
This class wraps an existing compare expression with parenthesis.

  • Constructor Details

    • DBCompareParenthesisExpr

      public DBCompareParenthesisExpr(DBCompareExpr expr)

  • Method Details

    • isWrapper

      public boolean isWrapper()
      Description copied from interface: Unwrappable
      Returns true if the object is a wrapper for another object
      Specified by:
      isWrapper in interface Unwrappable<DBCompareExpr>
      Returns:
      true if its a wrapper or false otherwise

    • unwrap

      public DBCompareExpr unwrap()
      Description copied from interface: Unwrappable
      Unwrapps am object that is wrapped by this object If the object is not a wrapper then it must return itself (this)!
      Specified by:
      unwrap in interface Unwrappable<DBCompareExpr>
      Returns:
      the original object

    • getDatabase

      public final DBDatabase getDatabase()
      Description copied from class: DBObject
      Returns the database object to which this object belongs to. For the database object itself this function will return the this pointer.
      Specified by:
      getDatabase in class DBObject
      Returns:
      the database object

    • getRowSet

      public DBRowSet getRowSet()
      Description copied from class: DBCompareExpr
      Returns the underlying rowset containing this column For functions involving none or more than one physical column this function return the first one
      Specified by:
      getRowSet in class DBCompareExpr
      Returns:
      a column used for this expression

    • isMutuallyExclusive

      public boolean isMutuallyExclusive(DBCompareExpr other)
      Specified by:
      isMutuallyExclusive in class DBCompareExpr

    • prepareParams

      public void prepareParams(DBCommand cmd, DBExpr parent)
      Description copied from interface: DBPreparable
      Prepares an expression for a query This function is called by DBCommand in order to add values as query parameters instead of being literally included in the sql statement Please Note: This function is internally called. Do not call yourself!
      Specified by:
      prepareParams in interface DBPreparable
      Parameters:
      cmd - the command to which to add the parameters
      parent - the parent expression holding the value

    • copy

      public DBCompareExpr copy(DBCommand newCmd)
      Description copied from class: DBCompareExpr
      internally used for command cloning
      Specified by:
      copy in class DBCompareExpr
      Parameters:
      newCmd - the new command object
      Returns:
      the cloned compare expression

    • addReferencedColumns

      public void addReferencedColumns(Set<DBColumn> list)
      Description copied from class: DBExpr
      Internal function to obtain all DBColumnExpr-objects used by this expression.
      Specified by:
      addReferencedColumns in class DBExpr
      Parameters:
      list - list to which all used column expressions must be added

    • addSQL

      public void addSQL(DBSQLBuilder sql, long context)
      Description copied from class: DBExpr
      Used to build the SQL command. SQL for this expression must be appended to StringBuilder.
      Specified by:
      addSQL in class DBExpr
      Parameters:
      sql - the string buffer used to build the sql command
      context - context flag for this SQL-Command (see CTX_??? constants).

    • isConstraintOn

      public boolean isConstraintOn(DBColumnExpr colExpr)
      Specified by:
      isConstraintOn in class DBCompareExpr