package org.drools;
import java.util.Iterator;
import org.drools.spi.GlobalResolver;
/**
* StatelessSessionResults allow inspection of session after it has executed. Querries can still be executed, unless you serialise at which point the
* WorkingMemory and RuleBase it references to execute thosa querries are lost due to being transient.
*
* Globals must be explicitely imported into the StatelessSessionResult to be accessible, otherwise getGlobal and getGlobalResolver return null.
* @author mproctor
*
*/
public interface StatelessSessionResult {
/**
* Iterator all Objects inserted into the StatelessSession.
* @return
* java.util.Iterators.
*/
Iterator iterateObjects();
/**
* Iterate only those objects that match the provided ObjectFilter.
* @param filter
* The ObjectFilter instance.
* @return
* java.util.Iterators.
*/
Iterator iterateObjects(org.drools.runtime.ObjectFilter filter);
/**
* Retrieve the QueryResults of the specified query.
*
* @param query
* The name of the query.
*
* @return The QueryResults of the specified query.
* If no results match the query it is empty..
*
* @throws IllegalArgumentException.
* if no query named "query" is found in the rulebase.
*/
public QueryResults getQueryResults(String query);
/**
* Allows for parameters to be passed to a query.
* @param query
* The name of the query.
* @param arguments
* The Object[] of arguments to pass to the query's parameters.
* @return
* java.util.Iterator.
*/
public QueryResults getQueryResults(final String query, final Object[] arguments);
/**
* Retrieves the global value for the given identifier, note that globals must be exported from the StatelessSession to be accessible.
* @param identifier
* The global identifier.
* @return
* The instance the global identifier points to.
*/
public Object getGlobal(String identifier);
/**
* The GlobalResolver returned from the GlobalExporter by the StatelessSessoin
* @return
* The GlobalResolver used for this StatelessSessionResult
*/
public GlobalResolver getGlobalResolver();
}
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