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package it.cnr.istc.pst.platinum.ai.deliberative.heuristic; |
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import java.lang.reflect.Constructor; |
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import java.util.Set; |
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import it.cnr.istc.pst.platinum.ai.deliberative.heuristic.pipeline.FlawInspector; |
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import it.cnr.istc.pst.platinum.ai.framework.domain.component.PlanDataBase; |
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import it.cnr.istc.pst.platinum.ai.framework.microkernel.FrameworkObject; |
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import it.cnr.istc.pst.platinum.ai.framework.microkernel.annotation.inject.framework.PlanDataBasePlaceholder; |
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import it.cnr.istc.pst.platinum.ai.framework.microkernel.annotation.lifecycle.PostConstruct; |
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import it.cnr.istc.pst.platinum.ai.framework.microkernel.lang.ex.NoFlawFoundException; |
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import it.cnr.istc.pst.platinum.ai.framework.microkernel.lang.flaw.Flaw; |
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import it.cnr.istc.pst.platinum.ai.framework.microkernel.resolver.ex.UnsolvableFlawException; |
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import it.cnr.istc.pst.platinum.ai.framework.utils.reflection.FrameworkReflectionUtils; |
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/** |
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* |
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* @author anacleto |
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* |
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*/ |
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public abstract class FlawSelectionHeuristic extends FrameworkObject |
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{ |
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@PlanDataBasePlaceholder |
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protected PlanDataBase pdb; |
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private String label; |
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/** |
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* |
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* @param label |
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*/ |
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protected FlawSelectionHeuristic(String label) { |
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super(); |
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this.label = label; |
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} |
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/** |
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* |
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* @return |
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*/ |
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public String getLabel() { |
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return label; |
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} |
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/** |
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* Return a set of equivalent flaws to solve for plan refinement. Each solution of a |
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* flaw determines a branch in the resulting search space of the planner. |
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* |
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* @return |
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* @throws UnsolvableFlawException |
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* @throws NoFlawFoundException |
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*/ |
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public abstract Set<Flaw> choose() |
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throws UnsolvableFlawException, NoFlawFoundException; |
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/** |
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* Check existing flaws without computing possible solutions |
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* |
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* @return |
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*/ |
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public abstract Set<Flaw> check(); |
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/** |
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* Filter a set of already computed flaws according to a certain criterion |
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* |
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* @param flaws |
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* @return |
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* @throws NoFlawFoundException |
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*/ |
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public abstract Set<Flaw> filter(Set<Flaw> flaws) |
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throws NoFlawFoundException; |
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/** |
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* |
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*/ |
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@Override |
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public String toString() { |
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return "{ \"label\": \"" + this.label + "\" }"; |
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} |
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/** |
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* |
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* @param className |
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* @return |
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*/ |
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protected <T extends FlawInspector> T doCreateFlawFilter(String className) |
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{ |
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// create filter instance |
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T filter = this.createFilter(className); |
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try |
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{ |
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// inject plan database reference |
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FrameworkReflectionUtils.doInjectReferenceThroughAnnotation(filter, PlanDataBasePlaceholder.class, this.pdb); |
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} |
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catch (Exception ex) { |
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throw new RuntimeException("Error while injecting plan database reference into flaw filter:\n- filter class: " + className +"\n- message: " + ex.getMessage() + "\n"); |
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} |
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try |
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{ |
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// finalize filter construction |
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FrameworkReflectionUtils.doInvokeMethodTaggedWithAnnotation(filter, PostConstruct.class); |
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} |
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catch (Exception ex) { |
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throw new RuntimeException("Error while calling post construct method on filter from class: " + className + "\n"); |
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} |
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// get created filter class |
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return filter; |
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} |
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/** |
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* |
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* @param className |
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* @return |
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*/ |
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private <T extends FlawInspector> T createFilter(String className) { |
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// flaw filter |
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T filter = null; |
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try |
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{ |
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// get class |
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Class<?> clazz = Class.forName(className); |
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// get constructor |
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@SuppressWarnings("unchecked") |
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Constructor<T> c = (Constructor<T>) clazz.getDeclaredConstructor(); |
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// set accessibility |
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c.setAccessible(true); |
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// create instance |
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filter = c.newInstance(); |
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} |
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catch (Exception ex) { |
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throw new RuntimeException("Error while creating flaw filter from class: " + className + "\n"); |
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} |
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// get created filter |
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return filter; |
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} |
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/** |
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* |
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*/ |
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public void clear() { |
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// nothing to do |
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} |
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} |
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pstlab /
PLATINUm
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