Uses of Package
org.apache.empire.db.expr.column

Packages that use org.apache.empire.db.expr.column

Package	Description
org.apache.empire.db	This package contains the core Empire-DB implementation classes.
org.apache.empire.db.expr.column	This package contains SQL-generator classes for column expressions.
org.apache.empire.db.expr.compare	This package contains SQL-generator classes for compare expressions used in the where and having clause.
org.apache.empire.db.expr.join	This package contains SQL-generator classes for join expressions used in the from clause.
org.apache.empire.dbms.postgresql	This package contains classes necessary to support the PostgreSQL database system.

Classes in org.apache.empire.db.expr.column used by org.apache.empire.db

Class	Description
DBAliasExpr	This class allows column renaming in SQL.
DBCalcExpr	This class is used for performing calculations in SQL It handles the mathematical operations ("+", "-", "*", "/") for the current column.
DBCaseExpr	This class represents a SQL case expression like "case when ?
DBCoalesceExpr
DBConcatExpr	This class is used for performing string concatenation in SQL
DBConcatFuncExpr	DBConcatExpression
DBConvertExpr	This class is used to convert a value to a different data type.
DBCountExpr	This class is used to add the "count" statement to the SQL-Command.
DBDecodeExpr	This class is used to decode a set of keys to the corresponding target values.
DBFuncExpr	This class is used for performing various SQL functions on a column or column expression.
DBValueExpr	This class is used for declaring constant values in SQL.

Classes in org.apache.empire.db.expr.column used by org.apache.empire.db.expr.column

Class	Description
DBAbstractFuncExpr	This implements some basic functionality for SQL functions based on a column expression
DBCaseExpr	This class represents a SQL case expression like "case when ?
DBDecodeExpr	This class is used to decode a set of keys to the corresponding target values.
DBPreparable	DBPreparable This interface indicates that a DBExpr Object wants to perform preparation tasks when added to a DBCommand
DBValueExpr	This class is used for declaring constant values in SQL.

Classes in org.apache.empire.db.expr.column used by org.apache.empire.db.expr.compare

Class	Description
DBFuncExpr	This class is used for performing various SQL functions on a column or column expression.
DBPreparable	DBPreparable This interface indicates that a DBExpr Object wants to perform preparation tasks when added to a DBCommand

Classes in org.apache.empire.db.expr.column used by org.apache.empire.db.expr.join

Class	Description
DBPreparable	DBPreparable This interface indicates that a DBExpr Object wants to perform preparation tasks when added to a DBCommand

Classes in org.apache.empire.db.expr.column used by org.apache.empire.dbms.postgresql

Class	Description
DBAbstractFuncExpr	This implements some basic functionality for SQL functions based on a column expression
DBPreparable	DBPreparable This interface indicates that a DBExpr Object wants to perform preparation tasks when added to a DBCommand