org.enhydra.shark.api.common
Interface FilterBuilder
- All Known Subinterfaces:
- ActivityEventAuditFilterBuilder, ActivityFilterBuilder, AssignmentFilterBuilder, DataEventAuditFilterBuilder, ProcessEventAuditFilterBuilder, ProcessFilterBuilder, ProcessMgrFilterBuilder, ResourceEventAuditFilterBuilder, ResourceFilterBuilder, VariableFilterBuilder
public interface FilterBuilder
FilterBuilder interface helps building expressions for any BaseIterator implementation
or methods using filters as input parameter. Experience has learned us that it's not
that easy to build any useful expression to be used in xxIterators. Since Shark
supports BeanShell and JavaScript, making expressions starts to be even more
complicated once you start to use string literals. Also, reading and debugging of such
expression might turn into very tedious task. On the other side OMG (or at least the
way we read it) explicitely says set_expression method takes String as parameter, and
there's no escape. FilterBuilder and it's extending interfaces/classes serves the
intention to ease this task, although there is another benefit - it allows us to
prepare such expressions xxIterator can execute directly against database, thus
improving the performance.
- Version:
- 0.2
- Author:
- Vladimir Puskas
Method Summary |
WMFilter |
addBshExpression(WMSessionHandle sHandle,
WMFilter filter,
java.lang.String exp)
Appends arbitrary condition
Here you may specify any script compatible expression, but beware complete
expression will be evaluated inside Java VM , not on DB. |
WMFilter |
and(WMSessionHandle sHandle,
WMFilter f1,
WMFilter f2)
|
WMFilter |
andForArray(WMSessionHandle sHandle,
WMFilter[] fs)
|
WMFilter |
createEmptyFilter(WMSessionHandle shandle)
|
java.lang.String |
getIteratorEmptyExpression(WMSessionHandle sHandle)
|
WMFilter |
not(WMSessionHandle sHandle,
WMFilter f)
|
WMFilter |
or(WMSessionHandle sHandle,
WMFilter f1,
WMFilter f2)
|
WMFilter |
orForArray(WMSessionHandle sHandle,
WMFilter[] fs)
|
WMFilter |
setLimit(WMSessionHandle sHandle,
WMFilter f,
int limit)
|
WMFilter |
setStartPosition(WMSessionHandle sHandle,
WMFilter f,
int startAt)
|
java.lang.String |
toIteratorExpression(WMSessionHandle sHandle,
WMFilter filter)
|
SQL_TYPE_ACTIVITY
static final int SQL_TYPE_ACTIVITY
- See Also:
- Constant Field Values
SQL_TYPE_PROCESS
static final int SQL_TYPE_PROCESS
- See Also:
- Constant Field Values
SQL_TYPE_MANAGER
static final int SQL_TYPE_MANAGER
- See Also:
- Constant Field Values
SQL_TYPE_RESOURCE
static final int SQL_TYPE_RESOURCE
- See Also:
- Constant Field Values
SQL_TYPE_ASSIGNMENT
static final int SQL_TYPE_ASSIGNMENT
- See Also:
- Constant Field Values
SQL_TYPE_EVENT_AUDIT
static final int SQL_TYPE_EVENT_AUDIT
- See Also:
- Constant Field Values
SQL_TYPE_VARIABLE
static final int SQL_TYPE_VARIABLE
- See Also:
- Constant Field Values
ORDER_ASCENDING
static final boolean ORDER_ASCENDING
- See Also:
- Constant Field Values
ORDER_DESCENDING
static final boolean ORDER_DESCENDING
- See Also:
- Constant Field Values
and
WMFilter and(WMSessionHandle sHandle,
WMFilter f1,
WMFilter f2)
throws java.lang.Exception
- Throws:
java.lang.Exception
andForArray
WMFilter andForArray(WMSessionHandle sHandle,
WMFilter[] fs)
throws java.lang.Exception
- Throws:
java.lang.Exception
or
WMFilter or(WMSessionHandle sHandle,
WMFilter f1,
WMFilter f2)
throws java.lang.Exception
- Throws:
java.lang.Exception
orForArray
WMFilter orForArray(WMSessionHandle sHandle,
WMFilter[] fs)
throws java.lang.Exception
- Throws:
java.lang.Exception
not
WMFilter not(WMSessionHandle sHandle,
WMFilter f)
throws java.lang.Exception
- Throws:
java.lang.Exception
setStartPosition
WMFilter setStartPosition(WMSessionHandle sHandle,
WMFilter f,
int startAt)
throws java.lang.Exception
- Throws:
java.lang.Exception
setLimit
WMFilter setLimit(WMSessionHandle sHandle,
WMFilter f,
int limit)
throws java.lang.Exception
- Throws:
java.lang.Exception
createEmptyFilter
WMFilter createEmptyFilter(WMSessionHandle shandle)
throws java.lang.Exception
- Throws:
java.lang.Exception
addBshExpression
WMFilter addBshExpression(WMSessionHandle sHandle,
WMFilter filter,
java.lang.String exp)
throws java.lang.Exception
- Appends arbitrary condition
Here you may specify any script compatible expression, but beware complete
expression will be evaluated inside Java VM , not on DB.
- Throws:
java.lang.Exception
toIteratorExpression
java.lang.String toIteratorExpression(WMSessionHandle sHandle,
WMFilter filter)
throws java.lang.Exception
- Throws:
java.lang.Exception
getIteratorEmptyExpression
java.lang.String getIteratorEmptyExpression(WMSessionHandle sHandle)
throws java.lang.Exception
- Throws:
java.lang.Exception