| Package | Description |
|---|---|
| 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.
|
| Modifier and Type | Class and Description |
|---|---|
class |
DBAbstractFuncExpr
This implements some basic functionality for SQL functions based on a column expression
|
class |
DBAliasExpr
This class allows column renaming in SQL.
|
class |
DBCoalesceExpr |
class |
DBConcatFuncExpr
DBConcatExpression
|
class |
DBConvertExpr
This class is used to convert a value to a different data type.
|
class |
DBDecodeExpr
This class is used to decode a set of keys to the corresponding target values.
|
class |
DBFuncExpr
This class is used for performing various SQL functions on a column or column expression.
|
class |
DBParenthesisExpr
This class allows column renaming in SQL.
|
class |
DBScalarExpr
This class is used for declaring scalar functions in SQL (like e.g. random).
|
class |
DBValueExpr
This class is used for declaring constant values in SQL.
|
| Modifier and Type | Class and Description |
|---|---|
class |
DBCompareAndOrExpr
This class is used for combining two filter constraints by and / or operator
There is no need to explicitly create instances of this class. |
class |
DBCompareColExpr
This class is used for defining filter constraints based on a column expression in SQL
There is no need to explicitly create instances of this class. |
class |
DBCompareExpr
This class is a common base class for all SQL filter constraints classes
|
class |
DBCompareNotExpr
This class is used for defining filter constraints based on a column expression in SQL
There is no need to explicitly create instances of this class. |
class |
DBCompareParenthesisExpr
This class wraps an existing compare expression with parenthesis.
|
class |
DBExistsExpr
This class is used for building up the SQL-Command for the EXISTS syntax.
|
| Modifier and Type | Class and Description |
|---|---|
class |
DBColumnJoinExpr |
class |
DBCompareJoinExpr
This class is used for building a join expression of an SQL statement.
|
class |
DBCrossJoinExpr
This class is used for building a join expression of an SQL statement.
|
class |
DBJoinExpr
This class is used for building a join expression of an SQL statement.
|
| Modifier and Type | Class and Description |
|---|---|
class |
PostgresAtAt
PostgresAtAt
create a Postgres @@ comparator
|
class |
PostgresFuncExpr |
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