gt:       return rawForOneArbitraryMatch(new Object[]{pHost}, processor);
context: /**
   * Generated from platform:/resource/hu.bme.mit.inf.dslreasoner.domains.cps/src/hu/bme/mit/inf/dslreasoner/domains/cps/queries/CpsQueries.vql
   */
  package hu.bme.mit.inf.dslreasoner.domains.cps.queries;
  
  import hu.bme.mit.inf.dslreasoner.domains.cps.HostInstance;
  import hu.bme.mit.inf.dslreasoner.domains.cps.queries.internal.AvailableHdd;
  import java.util.Arrays;
  import java.util.Collection;
  import java.util.LinkedHashSet;
  import java.util.List;
  import java.util.Objects;
  import java.util.Optional;
  import java.util.Set;
  import java.util.function.Consumer;
  import java.util.stream.Collectors;
  import java.util.stream.Stream;
  import org.apache.log4j.Logger;
  import org.eclipse.emf.ecore.EClass;
  import org.eclipse.viatra.query.runtime.api.IPatternMatch;
  import org.eclipse.viatra.query.runtime.api.IQuerySpecification;
  import org.eclipse.viatra.query.runtime.api.ViatraQueryEngine;
  import org.eclipse.viatra.query.runtime.api.impl.BaseGeneratedEMFPQuery;
  import org.eclipse.viatra.query.runtime.api.impl.BaseGeneratedEMFQuerySpecification;
  import org.eclipse.viatra.query.runtime.api.impl.BaseMatcher;
  import org.eclipse.viatra.query.runtime.api.impl.BasePatternMatch;
  import org.eclipse.viatra.query.runtime.emf.types.EClassTransitiveInstancesKey;
  import org.eclipse.viatra.query.runtime.matchers.backend.QueryEvaluationHint;
  import org.eclipse.viatra.query.runtime.matchers.psystem.IExpressionEvaluator;
  import org.eclipse.viatra.query.runtime.matchers.psystem.IValueProvider;
  import org.eclipse.viatra.query.runtime.matchers.psystem.PBody;
  import org.eclipse.viatra.query.runtime.matchers.psystem.PVariable;
  import org.eclipse.viatra.query.runtime.matchers.psystem.annotations.PAnnotation;
  import org.eclipse.viatra.query.runtime.matchers.psystem.annotations.ParameterReference;
  import org.eclipse.viatra.query.runtime.matchers.psystem.basicdeferred.ExportedParameter;
  import org.eclipse.viatra.query.runtime.matchers.psystem.basicdeferred.ExpressionEvaluation;
  import org.eclipse.viatra.query.runtime.matchers.psystem.basicenumerables.PositivePatternCall;
  import org.eclipse.viatra.query.runtime.matchers.psystem.basicenumerables.TypeConstraint;
  import org.eclipse.viatra.query.runtime.matchers.psystem.queries.PParameter;
  import org.eclipse.viatra.query.runtime.matchers.psystem.queries.PParameterDirection;
  import org.eclipse.viatra.query.runtime.matchers.psystem.queries.PVisibility;
  import org.eclipse.viatra.query.runtime.matchers.tuple.Tuple;
  import org.eclipse.viatra.query.runtime.matchers.tuple.Tuples;
  import org.eclipse.viatra.query.runtime.util.ViatraQueryLoggingUtil;
  
  /**
   * A pattern-specific query specification that can instantiate Matcher in a type-safe way.
   * 
   * <p>Original source:
   *         <code><pre>
   *         {@literal @}Constraint(severity = "error", key = {Host},
   *         	message = "Insufficient HDD available on host.")
   *         pattern notEnoughAvailableHdd(Host : HostInstance) {
   *         	find availableHdd(Host, Hdd);
   *         	check(Hdd {@literal <} 0);
   *         }
   * </pre></code>
   * 
   * @see Matcher
   * @see Match
   * 
   */
  @SuppressWarnings("all")
  public final class NotEnoughAvailableHdd extends BaseGeneratedEMFQuerySpecification<NotEnoughAvailableHdd.Matcher> {
    /**
     * Pattern-specific match representation of the hu.bme.mit.inf.dslreasoner.domains.cps.queries.notEnoughAvailableHdd pattern,
     * to be used in conjunction with {@link Matcher}.
     * 
     * <p>Class fields correspond to parameters of the pattern. Fields with value null are considered unassigned.
     * Each instance is a (possibly partial) substitution of pattern parameters,
     * usable to represent a match of the pattern in the result of a query,
     * or to specify the bound (fixed) input parameters when issuing a query.
     * 
     * @see Matcher
     * 
     */
    public static abstract class Match extends BasePatternMatch {
      private HostInstance fHost;
      
      private static List<String> parameterNames = makeImmutableList("Host");
      
      private Match(final HostInstance pHost) {
        this.fHost = pHost;
      }
      
      @Override
      public Object get(final String parameterName) {
        switch(parameterName) {
            case "Host": return this.fHost;
            default: return null;
        }
      }
      
      @Override
      public Object get(final int index) {
        switch(index) {
            case 0: return this.fHost;
            default: return null;
        }
      }
      
      public HostInstance getHost() {
        return this.fHost;
      }
      
      @Override
      public boolean set(final String parameterName, final Object newValue) {
        if (!isMutable()) throw new java.lang.UnsupportedOperationException();
        if ("Host".equals(parameterName) ) {
            this.fHost = (HostInstance) newValue;
            return true;
        }
        return false;
      }
      
      public void setHost(final HostInstance pHost) {
        if (!isMutable()) throw new java.lang.UnsupportedOperationException();
        this.fHost = pHost;
      }
      
      @Override
      public String patternName() {
        return "hu.bme.mit.inf.dslreasoner.domains.cps.queries.notEnoughAvailableHdd";
      }
      
      @Override
      public List<String> parameterNames() {
        return NotEnoughAvailableHdd.Match.parameterNames;
      }
      
      @Override
      public Object[] toArray() {
        return new Object[]{fHost};
      }
      
      @Override
      public NotEnoughAvailableHdd.Match toImmutable() {
        return isMutable() ? newMatch(fHost) : this;
      }
      
      @Override
      public String prettyPrint() {
        StringBuilder result = new StringBuilder();
        result.append("\"Host\"=" + prettyPrintValue(fHost));
        return result.toString();
      }
      
      @Override
      public int hashCode() {
        return Objects.hash(fHost);
      }
      
      @Override
      public boolean equals(final Object obj) {
        if (this == obj)
            return true;
        if (obj == null) {
            return false;
        }
        if ((obj instanceof NotEnoughAvailableHdd.Match)) {
            NotEnoughAvailableHdd.Match other = (NotEnoughAvailableHdd.Match) obj;
            return Objects.equals(fHost, other.fHost);
        } else {
            // this should be infrequent
            if (!(obj instanceof IPatternMatch)) {
                return false;
            }
            IPatternMatch otherSig  = (IPatternMatch) obj;
            return Objects.equals(specification(), otherSig.specification()) && Arrays.deepEquals(toArray(), otherSig.toArray());
        }
      }
      
      @Override
      public NotEnoughAvailableHdd specification() {
        return NotEnoughAvailableHdd.instance();
      }
      
      /**
       * Returns an empty, mutable match.
       * Fields of the mutable match can be filled to create a partial match, usable as matcher input.
       * 
       * @return the empty match.
       * 
       */
      public static NotEnoughAvailableHdd.Match newEmptyMatch() {
        return new Mutable(null);
      }
      
      /**
       * Returns a mutable (partial) match.
       * Fields of the mutable match can be filled to create a partial match, usable as matcher input.
       * 
       * @param pHost the fixed value of pattern parameter Host, or null if not bound.
       * @return the new, mutable (partial) match object.
       * 
       */
      public static NotEnoughAvailableHdd.Match newMutableMatch(final HostInstance pHost) {
        return new Mutable(pHost);
      }
      
      /**
       * Returns a new (partial) match.
       * This can be used e.g. to call the matcher with a partial match.
       * <p>The returned match will be immutable. Use {@link #newEmptyMatch()} to obtain a mutable match object.
       * @param pHost the fixed value of pattern parameter Host, or null if not bound.
       * @return the (partial) match object.
       * 
       */
      public static NotEnoughAvailableHdd.Match newMatch(final HostInstance pHost) {
        return new Immutable(pHost);
      }
      
      private static final class Mutable extends NotEnoughAvailableHdd.Match {
        Mutable(final HostInstance pHost) {
          super(pHost);
        }
        
        @Override
        public boolean isMutable() {
          return true;
        }
      }
      
      private static final class Immutable extends NotEnoughAvailableHdd.Match {
        Immutable(final HostInstance pHost) {
          super(pHost);
        }
        
        @Override
        public boolean isMutable() {
          return false;
        }
      }
    }
    
    /**
     * Generated pattern matcher API of the hu.bme.mit.inf.dslreasoner.domains.cps.queries.notEnoughAvailableHdd pattern,
     * providing pattern-specific query methods.
     * 
     * <p>Use the pattern matcher on a given model via {@link #on(ViatraQueryEngine)},
     * e.g. in conjunction with {@link ViatraQueryEngine#on(QueryScope)}.
     * 
     * <p>Matches of the pattern will be represented as {@link Match}.
     * 
     * <p>Original source:
     * <code><pre>
     * {@literal @}Constraint(severity = "error", key = {Host},
     * 	message = "Insufficient HDD available on host.")
     * pattern notEnoughAvailableHdd(Host : HostInstance) {
     * 	find availableHdd(Host, Hdd);
     * 	check(Hdd {@literal <} 0);
     * }
     * </pre></code>
     * 
     * @see Match
     * @see NotEnoughAvailableHdd
     * 
     */
    public static class Matcher extends BaseMatcher<NotEnoughAvailableHdd.Match> {
      /**
       * Initializes the pattern matcher within an existing VIATRA Query engine.
       * If the pattern matcher is already constructed in the engine, only a light-weight reference is returned.
       * 
       * @param engine the existing VIATRA Query engine in which this matcher will be created.
       * @throws ViatraQueryRuntimeException if an error occurs during pattern matcher creation
       * 
       */
      public static NotEnoughAvailableHdd.Matcher on(final ViatraQueryEngine engine) {
        // check if matcher already exists
        Matcher matcher = engine.getExistingMatcher(querySpecification());
        if (matcher == null) {
            matcher = (Matcher)engine.getMatcher(querySpecification());
        }
        return matcher;
      }
      
      /**
       * @throws ViatraQueryRuntimeException if an error occurs during pattern matcher creation
       * @return an initialized matcher
       * @noreference This method is for internal matcher initialization by the framework, do not call it manually.
       * 
       */
      public static NotEnoughAvailableHdd.Matcher create() {
        return new Matcher();
      }
      
      private static final int POSITION_HOST = 0;
      
      private static final Logger LOGGER = ViatraQueryLoggingUtil.getLogger(NotEnoughAvailableHdd.Matcher.class);
      
      /**
       * Initializes the pattern matcher within an existing VIATRA Query engine.
       * If the pattern matcher is already constructed in the engine, only a light-weight reference is returned.
       * 
       * @param engine the existing VIATRA Query engine in which this matcher will be created.
       * @throws ViatraQueryRuntimeException if an error occurs during pattern matcher creation
       * 
       */
      private Matcher() {
        super(querySpecification());
      }
      
      /**
       * Returns the set of all matches of the pattern that conform to the given fixed values of some parameters.
       * @param pHost the fixed value of pattern parameter Host, or null if not bound.
       * @return matches represented as a Match object.
       * 
       */
      public Collection<NotEnoughAvailableHdd.Match> getAllMatches(final HostInstance pHost) {
        return rawStreamAllMatches(new Object[]{pHost}).collect(Collectors.toSet());
      }
      
      /**
       * Returns a stream of all matches of the pattern that conform to the given fixed values of some parameters.
       * </p>
       * <strong>NOTE</strong>: It is important not to modify the source model while the stream is being processed.
       * If the match set of the pattern changes during processing, the contents of the stream is <strong>undefined</strong>.
       * In such cases, either rely on {@link #getAllMatches()} or collect the results of the stream in end-user code.
       * @param pHost the fixed value of pattern parameter Host, or null if not bound.
       * @return a stream of matches represented as a Match object.
       * 
       */
      public Stream<NotEnoughAvailableHdd.Match> streamAllMatches(final HostInstance pHost) {
        return rawStreamAllMatches(new Object[]{pHost});
      }
      
      /**
       * Returns an arbitrarily chosen match of the pattern that conforms to the given fixed values of some parameters.
       * Neither determinism nor randomness of selection is guaranteed.
       * @param pHost the fixed value of pattern parameter Host, or null if not bound.
       * @return a match represented as a Match object, or null if no match is found.
       * 
       */
      public Optional<NotEnoughAvailableHdd.Match> getOneArbitraryMatch(final HostInstance pHost) {
        return rawGetOneArbitraryMatch(new Object[]{pHost});
      }
      
      /**
       * Indicates whether the given combination of specified pattern parameters constitute a valid pattern match,
       * under any possible substitution of the unspecified parameters (if any).
       * @param pHost the fixed value of pattern parameter Host, or null if not bound.
       * @return true if the input is a valid (partial) match of the pattern.
       * 
       */
      public boolean hasMatch(final HostInstance pHost) {
        return rawHasMatch(new Object[]{pHost});
      }
      
      /**
       * Returns the number of all matches of the pattern that conform to the given fixed values of some parameters.
       * @param pHost the fixed value of pattern parameter Host, or null if not bound.
       * @return the number of pattern matches found.
       * 
       */
      public int countMatches(final HostInstance pHost) {
        return rawCountMatches(new Object[]{pHost});
      }
      
      /**
       * Executes the given processor on an arbitrarily chosen match of the pattern that conforms to the given fixed values of some parameters.
       * Neither determinism nor randomness of selection is guaranteed.
       * @param pHost the fixed value of pattern parameter Host, or null if not bound.
       * @param processor the action that will process the selected match.
       * @return true if the pattern has at least one match with the given parameter values, false if the processor was not invoked
       * 
       */
      public boolean forOneArbitraryMatch(final HostInstance pHost, final Consumer<? super NotEnoughAvailableHdd.Match> processor) {
  