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DynamicFilterParameterSpecification (Hibernate API Documentation) - Hibernate 3.2.4 正式版 API 英文文档

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org.hibernate.param
Class DynamicFilterParameterSpecification

java.lang.Object
  extended byorg.hibernate.param.DynamicFilterParameterSpecification
All Implemented Interfaces:
ParameterSpecification
public class DynamicFilterParameterSpecification
extends Object
implements ParameterSpecification

A specialized ParameterSpecification impl for dealing with a dynamic filter parameters.

Note: this class is currently not used. The ideal way to deal with dynamic filter parameters for HQL would be to track them just as we do with other parameters in the translator. However, the problem with that is that we currently do not know the filters which actually apply to the query; we know the active/enabled ones, but not the ones that actually "make it into" the resulting query.

Author:
Steve Ebersole

Constructor Summary
DynamicFilterParameterSpecification(String filterName, String parameterName, Type definedParameterType, int queryParameterPosition)
           
 
Method Summary
 int bind(PreparedStatement statement, QueryParameters qp, SessionImplementor session, int position)
          Bind the appropriate value into the given statement at the specified position.
 Type getExpectedType()
          Get the type which we are expeting for a bind into this parameter based on translated contextual information.
 String renderDisplayInfo()
          Render this parameter into displayable info (for logging, etc).
 void setExpectedType(Type expectedType)
          Injects the expected type.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

DynamicFilterParameterSpecification

public DynamicFilterParameterSpecification(String filterName,
                                           String parameterName,
                                           Type definedParameterType,
                                           int queryParameterPosition)
Method Detail

bind

public int bind(PreparedStatement statement,
                QueryParameters qp,
                SessionImplementor session,
                int position)
         throws SQLException
Description copied from interface: ParameterSpecification
Bind the appropriate value into the given statement at the specified position.

Specified by:
bind in interface ParameterSpecification
Parameters:
statement - The statement into which the value should be bound.
qp - The defined values for the current query execution.
session - The session against which the current execution is occuring.
position - The position from which to start binding value(s).
Returns:
The number of sql bind positions "eaten" by this bind operation.
Throws:
SQLException - Indicates problems performing the JDBC biind operation.

getExpectedType

public Type getExpectedType()
Description copied from interface: ParameterSpecification
Get the type which we are expeting for a bind into this parameter based on translated contextual information.

Specified by:
getExpectedType in interface ParameterSpecification
Returns:
The expected type.

setExpectedType

public void setExpectedType(Type expectedType)
Description copied from interface: ParameterSpecification
Injects the expected type. Called during translation.

Specified by:
setExpectedType in interface ParameterSpecification
Parameters:
expectedType - The type to expect.

renderDisplayInfo

public String renderDisplayInfo()
Description copied from interface: ParameterSpecification
Render this parameter into displayable info (for logging, etc).

Specified by:
renderDisplayInfo in interface ParameterSpecification
Returns:
The displayable info.
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