plugins/org.eclipse.qvtd.pivot.qvtschedule/emf-gen/org/eclipse/qvtd/pivot/qvtschedule/ConnectionRole.java - mmt/org.eclipse.qvtd - Git at Google

 /**
  * <copyright>
  *
  * Copyright (c) 2013, 2018 Willink Transformations and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v2.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v20.html
  *
  * Contributors:
  *   E.D.Willink - Initial API and implementation
  *
  * </copyright>
  */
 package org.eclipse.qvtd.pivot.qvtschedule;

 import java.util.Arrays;
 import java.util.Collections;
 import java.util.List;

 import org.eclipse.emf.common.util.Enumerator;
 import org.eclipse.jdt.annotation.NonNull;
 import org.eclipse.jdt.annotation.Nullable;
 import org.eclipse.qvtd.pivot.qvtbase.graphs.GraphStringBuilder;
 import org.eclipse.qvtd.pivot.qvtbase.graphs.ToGraphHelper;
 import org.eclipse.qvtd.pivot.qvtbase.graphs.GraphStringBuilder.GraphNode;
 import org.eclipse.qvtd.pivot.qvtschedule.utilities.QVTscheduleConstants;

 /**
  * <!-- begin-user-doc -->
  * A representation of the literals of the enumeration '<em><b>Connection Role Enum</b></em>',
  * and utility methods for working with them.
  * @extends GraphStringBuilder.GraphEdge
  * <!-- end-user-doc -->
  * @see org.eclipse.qvtd.pivot.qvtschedule.QVTschedulePackage#getConnectionRole()
  * @model
  * @generated
  */
 public enum ConnectionRole implements Enumerator, GraphStringBuilder.GraphEdge {
 	/**
 	 * The '<em><b>MANDATORY EDGE</b></em>' literal object.
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * <!-- begin-model-doc -->
 	 * A MANDATORY_EDGE connection 'passes' a used input edge that must be fully computed before use. This is typically for a
 	 * collection, since it is not possible to determine when a last partial addition is the last, therefore all
 	 * additions must occur before any access.
 	 * <!-- end-model-doc -->
 	 * @see #MANDATORY_EDGE_VALUE
 	 * @generated
 	 * @ordered
 	 */
 	MANDATORY_EDGE(0, "MANDATORY_EDGE", "MANDATORY_EDGE"),

 	/**
 	 * The '<em><b>MANDATORY NODE</b></em>' literal object.
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * <!-- begin-model-doc -->
 	 * A MANDATORY_NODE connection 'passes' a used input node that must be fully computed before use. This is typically for a
 	 * collection, since it is not possible to determine when a last partial addition is the last, therefore all
 	 * additions must occur before any access.
 	 * <!-- end-model-doc -->
 	 * @see #MANDATORY_NODE_VALUE
 	 * @generated
 	 * @ordered
 	 */
 	MANDATORY_NODE(1, "MANDATORY_NODE", "MANDATORY_NODE"),

 	/**
 	 * The '<em><b>PASSED</b></em>' literal object.
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * <!-- begin-model-doc -->
 	 * A PASSED connection passes a required input. This is typically from an introducer/producer/join to
 	 * a consumer's head. A value must actually be passed by the call.
 	 * <!-- end-model-doc -->
 	 * @see #PASSED_VALUE
 	 * @generated
 	 * @ordered
 	 */
 	PASSED(2, "PASSED", "PASSED"),

 	/**
 	 * The '<em><b>PREFERRED EDGE</b></em>' literal object.
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * <!-- begin-model-doc -->
 	 * A PREFERRED_EDGE connection 'passes' a used input edge that is beneficially but not necessarily computed before use.
 	 * If not computed before use, run-time overheads are incurred to defer reads until writes have occurred.
 	 * <!-- end-model-doc -->
 	 * @see #PREFERRED_EDGE_VALUE
 	 * @generated
 	 * @ordered
 	 */
 	PREFERRED_EDGE(3, "PREFERRED_EDGE", "PREFERRED_EDGE"),

 	/**
 	 * The '<em><b>PREFERRED NODE</b></em>' literal object.
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * <!-- begin-model-doc -->
 	 * A PREFERRED_NODE connection 'passes' a used input node that is beneficially but not necessarily computed before use.
 	 * If not computed before use, run-time overheads are incurred to defer reads until writes have occurred.
 	 * <!-- end-model-doc -->
 	 * @see #PREFERRED_NODE_VALUE
 	 * @generated
 	 * @ordered
 	 */
 	PREFERRED_NODE(4, "PREFERRED_NODE", "PREFERRED_NODE"), /**
 	 * The '<em><b>UNDEFINED</b></em>' literal object.
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * <!-- begin-model-doc -->
 	 * An UNDEFINED connection is the intial state of a connection that evolves by merging.
 	 * <!-- end-model-doc -->
 	 * @see #UNDEFINED_VALUE
 	 * @generated
 	 * @ordered
 	 */
 	UNDEFINED(5, "UNDEFINED", "UNDEFINED");

 	/**
 	 * The '<em><b>MANDATORY EDGE</b></em>' literal value.
 	 * <!-- begin-user-doc -->
 	 * <p>
 	 * If the meaning of '<em><b>MANDATORY EDGE</b></em>' literal object isn't clear,
 	 * there really should be more of a description here...
 	 * </p>
 	 * <!-- end-user-doc -->
 	 * <!-- begin-model-doc -->
 	 * A MANDATORY_EDGE connection 'passes' a used input edge that must be fully computed before use. This is typically for a
 	 * collection, since it is not possible to determine when a last partial addition is the last, therefore all
 	 * additions must occur before any access.
 	 * <!-- end-model-doc -->
 	 * @see #MANDATORY_EDGE
 	 * @model
 	 * @generated
 	 * @ordered
 	 */
 	public static final int MANDATORY_EDGE_VALUE = 0;

 	/**
 	 * The '<em><b>MANDATORY NODE</b></em>' literal value.
 	 * <!-- begin-user-doc -->
 	 * <p>
 	 * If the meaning of '<em><b>MANDATORY NODE</b></em>' literal object isn't clear,
 	 * there really should be more of a description here...
 	 * </p>
 	 * <!-- end-user-doc -->
 	 * <!-- begin-model-doc -->
 	 * A MANDATORY_NODE connection 'passes' a used input node that must be fully computed before use. This is typically for a
 	 * collection, since it is not possible to determine when a last partial addition is the last, therefore all
 	 * additions must occur before any access.
 	 * <!-- end-model-doc -->
 	 * @see #MANDATORY_NODE
 	 * @model
 	 * @generated
 	 * @ordered
 	 */
 	public static final int MANDATORY_NODE_VALUE = 1;

 	/**
 	 * The '<em><b>PASSED</b></em>' literal value.
 	 * <!-- begin-user-doc -->
 	 * <p>
 	 * If the meaning of '<em><b>PASSED</b></em>' literal object isn't clear,
 	 * there really should be more of a description here...
 	 * </p>
 	 * <!-- end-user-doc -->
 	 * <!-- begin-model-doc -->
 	 * A PASSED connection passes a required input. This is typically from an introducer/producer/join to
 	 * a consumer's head. A value must actually be passed by the call.
 	 * <!-- end-model-doc -->
 	 * @see #PASSED
 	 * @model
 	 * @generated
 	 * @ordered
 	 */
 	public static final int PASSED_VALUE = 2;

 	/**
 	 * The '<em><b>PREFERRED EDGE</b></em>' literal value.
 	 * <!-- begin-user-doc -->
 	 * <p>
 	 * If the meaning of '<em><b>PREFERRED EDGE</b></em>' literal object isn't clear,
 	 * there really should be more of a description here...
 	 * </p>
 	 * <!-- end-user-doc -->
 	 * <!-- begin-model-doc -->
 	 * A PREFERRED_EDGE connection 'passes' a used input edge that is beneficially but not necessarily computed before use.
 	 * If not computed before use, run-time overheads are incurred to defer reads until writes have occurred.
 	 * <!-- end-model-doc -->
 	 * @see #PREFERRED_EDGE
 	 * @model
 	 * @generated
 	 * @ordered
 	 */
 	public static final int PREFERRED_EDGE_VALUE = 3;

 	/**
 	 * The '<em><b>PREFERRED NODE</b></em>' literal value.
 	 * <!-- begin-user-doc -->
 	 * <p>
 	 * If the meaning of '<em><b>PREFERRED NODE</b></em>' literal object isn't clear,
 	 * there really should be more of a description here...
 	 * </p>
 	 * <!-- end-user-doc -->
 	 * <!-- begin-model-doc -->
 	 * A PREFERRED_NODE connection 'passes' a used input node that is beneficially but not necessarily computed before use.
 	 * If not computed before use, run-time overheads are incurred to defer reads until writes have occurred.
 	 * <!-- end-model-doc -->
 	 * @see #PREFERRED_NODE
 	 * @model
 	 * @generated
 	 * @ordered
 	 */
 	public static final int PREFERRED_NODE_VALUE = 4;

 	/**
 	 * The '<em><b>UNDEFINED</b></em>' literal value.
 	 * <!-- begin-user-doc -->
 	 * <p>
 	 * If the meaning of '<em><b>UNDEFINED</b></em>' literal object isn't clear,
 	 * there really should be more of a description here...
 	 * </p>
 	 * <!-- end-user-doc -->
 	 * <!-- begin-model-doc -->
 	 * An UNDEFINED connection is the intial state of a connection that evolves by merging.
 	 * <!-- end-model-doc -->
 	 * @see #UNDEFINED
 	 * @model
 	 * @generated
 	 * @ordered
 	 */
 	public static final int UNDEFINED_VALUE = 5;

 	/**
 	 * An array of all the '<em><b>Connection Role</b></em>' enumerators.
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @generated
 	 */
 	private static final ConnectionRole[] VALUES_ARRAY =
 			new ConnectionRole[] {
 			MANDATORY_EDGE,
 			MANDATORY_NODE,
 			PASSED,
 			PREFERRED_EDGE,
 			PREFERRED_NODE,
 			UNDEFINED,
 		};

 	/**
 	 * A public read-only list of all the '<em><b>Connection Role</b></em>' enumerators.
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @generated
 	 */
 	public static final List<ConnectionRole> VALUES = Collections.unmodifiableList(Arrays.asList(VALUES_ARRAY));

 	/**
 	 * Returns the '<em><b>Connection Role</b></em>' literal with the specified literal value.
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @param literal the literal.
 	 * @return the matching enumerator or <code>null</code>.
 	 * @generated
 	 */
 	public static ConnectionRole get(String literal) {
 		for (int i = 0; i < VALUES_ARRAY.length; ++i) {
 			ConnectionRole result = VALUES_ARRAY[i];
 			if (result.toString().equals(literal)) {
 				return result;
 			}
 		}
 		return null;
 	}

 	/**
 	 * Returns the '<em><b>Connection Role</b></em>' literal with the specified name.
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @param name the name.
 	 * @return the matching enumerator or <code>null</code>.
 	 * @generated
 	 */
 	public static ConnectionRole getByName(String name) {
 		for (int i = 0; i < VALUES_ARRAY.length; ++i) {
 			ConnectionRole result = VALUES_ARRAY[i];
 			if (result.getName().equals(name)) {
 				return result;
 			}
 		}
 		return null;
 	}

 	/**
 	 * Returns the '<em><b>Connection Role</b></em>' literal with the specified integer value.
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @param value the integer value.
 	 * @return the matching enumerator or <code>null</code>.
 	 * @generated
 	 */
 	public static ConnectionRole get(int value) {
 		switch (value) {
 			case MANDATORY_EDGE_VALUE: return MANDATORY_EDGE;
 			case MANDATORY_NODE_VALUE: return MANDATORY_NODE;
 			case PASSED_VALUE: return PASSED;
 			case PREFERRED_EDGE_VALUE: return PREFERRED_EDGE;
 			case PREFERRED_NODE_VALUE: return PREFERRED_NODE;
 			case UNDEFINED_VALUE: return UNDEFINED;
 		}
 		return null;
 	}

 	/**
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @generated
 	 */
 	private final int value;

 	/**
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @generated
 	 */
 	private final String name;

 	/**
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @generated
 	 */
 	private final String literal;

 	/**
 	 * Only this class can construct instances.
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @generated
 	 */
 	private ConnectionRole(int value, String name, String literal) {
 		this.value = value;
 		this.name = name;
 		this.literal = literal;
 	}

 	/**
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @generated
 	 */
 	@Override
 	public int getValue() {
 	  return value;
 	}

 	/**
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @generated
 	 */
 	@Override
 	public String getName() {
 	  return name;
 	}

 	/**
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @generated
 	 */
 	@Override
 	public String getLiteral() {
 	  return literal;
 	}

 	/**
 	 * Returns the literal value of the enumerator, which is its string representation.
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @generated
 	 */
 	@Override
 	public String toString() {
 		return literal;
 	}

 	public @Nullable String getArrowhead() {
 		return null;
 	}

 	@Override
 	public @NonNull String getColor() {
 		switch (this) {
 			case MANDATORY_EDGE: return QVTscheduleConstants.ORDERING_COLOR;
 			case MANDATORY_NODE: return QVTscheduleConstants.BINDING_COLOR;
 			case PASSED: return QVTscheduleConstants.BINDING_COLOR;
 			case PREFERRED_EDGE: return QVTscheduleConstants.ORDERING_COLOR;
 			case PREFERRED_NODE: return QVTscheduleConstants.BINDING_COLOR;
 			case UNDEFINED: return QVTscheduleConstants.OTHER_COLOR;
 		}
 		throw new UnsupportedOperationException();
 	}

 	public @Nullable String getLabel() {
 		return null;
 	}

 	public @NonNull Integer getPenwidth() {
 		return QVTscheduleConstants.LINE_WIDTH;
 	}

 	public @NonNull String getStereotype() {
 		switch (this) {
 			case MANDATORY_EDGE: return "«mandatory»";
 			case MANDATORY_NODE: return "«mandatory»";
 			case PASSED: return "«passed»";
 			case PREFERRED_EDGE: return "«preferred»";
 			case PREFERRED_NODE: return "«preferred»";
 		}
 		throw new UnsupportedOperationException();
 	}

 	/**
 	 * Return the line style with which this connection is drawn, null for solid.
 	 */
 	public @Nullable String getStyle() {
 		switch (this) {
 			case MANDATORY_EDGE: return "dashed";
 			case MANDATORY_NODE: return "dashed";
 			case PASSED: return null;
 			case PREFERRED_EDGE: return "dotted";
 			case PREFERRED_NODE: return "dotted";
 			case UNDEFINED: return null;
 		}
 		throw new UnsupportedOperationException();
 	}

 	public boolean isMandatory() {
 		switch (this) {
 			case MANDATORY_EDGE: return true;
 			case MANDATORY_NODE: return true;
 			case PASSED: return false;
 			case PREFERRED_EDGE: return false;
 			case PREFERRED_NODE: return false;
 			case UNDEFINED: return false;
 		}
 		throw new UnsupportedOperationException();
 	}

 	public boolean isPassed() {
 		switch (this) {
 			case MANDATORY_EDGE: return false;
 			case MANDATORY_NODE: return false;
 			case PASSED: return true;
 			case PREFERRED_EDGE: return false;
 			case PREFERRED_NODE: return false;
 			case UNDEFINED: return false;
 		}
 		throw new UnsupportedOperationException();
 	}

 	public boolean isPreferred() {
 		switch (this) {
 			case MANDATORY_EDGE: return true;
 			case MANDATORY_NODE: return true;
 			case PASSED: return false;
 			case PREFERRED_EDGE: return true;
 			case PREFERRED_NODE: return true;
 			case UNDEFINED: return false;
 		}
 		throw new UnsupportedOperationException();
 	}

 	public @NonNull ConnectionRole merge(@NonNull ConnectionRole connectionRoleEnum) {
 		switch (this) {
 			case MANDATORY_EDGE:
 			case MANDATORY_NODE:{
 				if (connectionRoleEnum.isPassed()) {
 					return connectionRoleEnum;
 				}
 				if (connectionRoleEnum.isPreferred()) {
 					return this;
 				}
 				break;
 			}
 			case PASSED: {
 				if (connectionRoleEnum.isMandatory()) {
 					return this;
 				}
 				if (connectionRoleEnum.isPreferred()) {
 					return this;
 				}
 				break;
 			}
 			case PREFERRED_EDGE:
 			case PREFERRED_NODE: {
 				if (connectionRoleEnum.isPassed()) {
 					return connectionRoleEnum;
 				}
 				if (connectionRoleEnum.isMandatory()) {
 					return connectionRoleEnum;
 				}
 				break;
 			}
 			case UNDEFINED: {
 				return connectionRoleEnum;
 			}
 		}
 		throw new UnsupportedOperationException();
 	}

 	@Override
 	public void appendEdgeAttributes(@NonNull ToGraphHelper toGraphHelper, @NonNull String sourceName, @NonNull String targetName) {
 		GraphStringBuilder s = toGraphHelper.getGraphStringBuilder();
 		toGraphHelper.setColor(this);
 		String style = getStyle();
 		if (style != null) {
 			s.setStyle(style);
 		}
 		String arrowhead = getArrowhead();
 		if (arrowhead != null) {
 			s.setArrowhead(arrowhead);
 		}
 		s.setPenwidth(getPenwidth());
 		s.appendAttributedEdge(sourceName, this, targetName);
 	}


 	@Override
 	public @NonNull GraphNode getEdgeSource() {
 		throw new UnsupportedOperationException();
 	}

 	@Override
 	public @NonNull GraphNode getEdgeTarget() {
 		throw new UnsupportedOperationException();
 	}
 } //ConnectionRoleEnum
	/**
	* <copyright>
	*
	* Copyright (c) 2013, 2018 Willink Transformations and others.
	* All rights reserved. This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License v2.0
	* which accompanies this distribution, and is available at
	* http://www.eclipse.org/legal/epl-v20.html
	*
	* Contributors:
	* E.D.Willink - Initial API and implementation
	*
	* </copyright>
	*/
	package org.eclipse.qvtd.pivot.qvtschedule;

	import java.util.Arrays;
	import java.util.Collections;
	import java.util.List;

	import org.eclipse.emf.common.util.Enumerator;
	import org.eclipse.jdt.annotation.NonNull;
	import org.eclipse.jdt.annotation.Nullable;
	import org.eclipse.qvtd.pivot.qvtbase.graphs.GraphStringBuilder;
	import org.eclipse.qvtd.pivot.qvtbase.graphs.ToGraphHelper;
	import org.eclipse.qvtd.pivot.qvtbase.graphs.GraphStringBuilder.GraphNode;
	import org.eclipse.qvtd.pivot.qvtschedule.utilities.QVTscheduleConstants;

	/**
	* <!-- begin-user-doc -->
	* A representation of the literals of the enumeration '<em><b>Connection Role Enum</b></em>',
	* and utility methods for working with them.
	* @extends GraphStringBuilder.GraphEdge
	* <!-- end-user-doc -->
	* @see org.eclipse.qvtd.pivot.qvtschedule.QVTschedulePackage#getConnectionRole()
	* @model
	* @generated
	*/
	public enum ConnectionRole implements Enumerator, GraphStringBuilder.GraphEdge {
	/**
	* The '<em><b>MANDATORY EDGE</b></em>' literal object.
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* <!-- begin-model-doc -->
	* A MANDATORY_EDGE connection 'passes' a used input edge that must be fully computed before use. This is typically for a
	* collection, since it is not possible to determine when a last partial addition is the last, therefore all
	* additions must occur before any access.
	* <!-- end-model-doc -->
	* @see #MANDATORY_EDGE_VALUE
	* @generated
	* @ordered
	*/
	MANDATORY_EDGE(0, "MANDATORY_EDGE", "MANDATORY_EDGE"),

	/**
	* The '<em><b>MANDATORY NODE</b></em>' literal object.
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* <!-- begin-model-doc -->
	* A MANDATORY_NODE connection 'passes' a used input node that must be fully computed before use. This is typically for a
	* collection, since it is not possible to determine when a last partial addition is the last, therefore all
	* additions must occur before any access.
	* <!-- end-model-doc -->
	* @see #MANDATORY_NODE_VALUE
	* @generated
	* @ordered
	*/
	MANDATORY_NODE(1, "MANDATORY_NODE", "MANDATORY_NODE"),

	/**
	* The '<em><b>PASSED</b></em>' literal object.
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* <!-- begin-model-doc -->
	* A PASSED connection passes a required input. This is typically from an introducer/producer/join to
	* a consumer's head. A value must actually be passed by the call.
	* <!-- end-model-doc -->
	* @see #PASSED_VALUE
	* @generated
	* @ordered
	*/
	PASSED(2, "PASSED", "PASSED"),

	/**
	* The '<em><b>PREFERRED EDGE</b></em>' literal object.
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* <!-- begin-model-doc -->
	* A PREFERRED_EDGE connection 'passes' a used input edge that is beneficially but not necessarily computed before use.
	* If not computed before use, run-time overheads are incurred to defer reads until writes have occurred.
	* <!-- end-model-doc -->
	* @see #PREFERRED_EDGE_VALUE
	* @generated
	* @ordered
	*/
	PREFERRED_EDGE(3, "PREFERRED_EDGE", "PREFERRED_EDGE"),

	/**
	* The '<em><b>PREFERRED NODE</b></em>' literal object.
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* <!-- begin-model-doc -->
	* A PREFERRED_NODE connection 'passes' a used input node that is beneficially but not necessarily computed before use.
	* If not computed before use, run-time overheads are incurred to defer reads until writes have occurred.
	* <!-- end-model-doc -->
	* @see #PREFERRED_NODE_VALUE
	* @generated
	* @ordered
	*/
	PREFERRED_NODE(4, "PREFERRED_NODE", "PREFERRED_NODE"), /**
	* The '<em><b>UNDEFINED</b></em>' literal object.
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* <!-- begin-model-doc -->
	* An UNDEFINED connection is the intial state of a connection that evolves by merging.
	* <!-- end-model-doc -->
	* @see #UNDEFINED_VALUE
	* @generated
	* @ordered
	*/
	UNDEFINED(5, "UNDEFINED", "UNDEFINED");

	/**
	* The '<em><b>MANDATORY EDGE</b></em>' literal value.
	* <!-- begin-user-doc -->
	* <p>
	* If the meaning of '<em><b>MANDATORY EDGE</b></em>' literal object isn't clear,
	* there really should be more of a description here...
	* </p>
	* <!-- end-user-doc -->
	* <!-- begin-model-doc -->
	* A MANDATORY_EDGE connection 'passes' a used input edge that must be fully computed before use. This is typically for a
	* collection, since it is not possible to determine when a last partial addition is the last, therefore all
	* additions must occur before any access.
	* <!-- end-model-doc -->
	* @see #MANDATORY_EDGE
	* @model
	* @generated
	* @ordered
	*/
	public static final int MANDATORY_EDGE_VALUE = 0;

	/**
	* The '<em><b>MANDATORY NODE</b></em>' literal value.
	* <!-- begin-user-doc -->
	* <p>
	* If the meaning of '<em><b>MANDATORY NODE</b></em>' literal object isn't clear,
	* there really should be more of a description here...
	* </p>
	* <!-- end-user-doc -->
	* <!-- begin-model-doc -->
	* A MANDATORY_NODE connection 'passes' a used input node that must be fully computed before use. This is typically for a
	* collection, since it is not possible to determine when a last partial addition is the last, therefore all
	* additions must occur before any access.
	* <!-- end-model-doc -->
	* @see #MANDATORY_NODE
	* @model
	* @generated
	* @ordered
	*/
	public static final int MANDATORY_NODE_VALUE = 1;

	/**
	* The '<em><b>PASSED</b></em>' literal value.
	* <!-- begin-user-doc -->
	* <p>
	* If the meaning of '<em><b>PASSED</b></em>' literal object isn't clear,
	* there really should be more of a description here...
	* </p>
	* <!-- end-user-doc -->
	* <!-- begin-model-doc -->
	* A PASSED connection passes a required input. This is typically from an introducer/producer/join to
	* a consumer's head. A value must actually be passed by the call.
	* <!-- end-model-doc -->
	* @see #PASSED
	* @model
	* @generated
	* @ordered
	*/
	public static final int PASSED_VALUE = 2;

	/**
	* The '<em><b>PREFERRED EDGE</b></em>' literal value.
	* <!-- begin-user-doc -->
	* <p>
	* If the meaning of '<em><b>PREFERRED EDGE</b></em>' literal object isn't clear,
	* there really should be more of a description here...
	* </p>
	* <!-- end-user-doc -->
	* <!-- begin-model-doc -->
	* A PREFERRED_EDGE connection 'passes' a used input edge that is beneficially but not necessarily computed before use.
	* If not computed before use, run-time overheads are incurred to defer reads until writes have occurred.
	* <!-- end-model-doc -->
	* @see #PREFERRED_EDGE
	* @model
	* @generated
	* @ordered
	*/
	public static final int PREFERRED_EDGE_VALUE = 3;

	/**
	* The '<em><b>PREFERRED NODE</b></em>' literal value.
	* <!-- begin-user-doc -->
	* <p>
	* If the meaning of '<em><b>PREFERRED NODE</b></em>' literal object isn't clear,
	* there really should be more of a description here...
	* </p>
	* <!-- end-user-doc -->
	* <!-- begin-model-doc -->
	* A PREFERRED_NODE connection 'passes' a used input node that is beneficially but not necessarily computed before use.
	* If not computed before use, run-time overheads are incurred to defer reads until writes have occurred.
	* <!-- end-model-doc -->
	* @see #PREFERRED_NODE
	* @model
	* @generated
	* @ordered
	*/
	public static final int PREFERRED_NODE_VALUE = 4;

	/**
	* The '<em><b>UNDEFINED</b></em>' literal value.
	* <!-- begin-user-doc -->
	* <p>
	* If the meaning of '<em><b>UNDEFINED</b></em>' literal object isn't clear,
	* there really should be more of a description here...
	* </p>
	* <!-- end-user-doc -->
	* <!-- begin-model-doc -->
	* An UNDEFINED connection is the intial state of a connection that evolves by merging.
	* <!-- end-model-doc -->
	* @see #UNDEFINED
	* @model
	* @generated
	* @ordered
	*/
	public static final int UNDEFINED_VALUE = 5;

	/**
	* An array of all the '<em><b>Connection Role</b></em>' enumerators.
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @generated
	*/
	private static final ConnectionRole[] VALUES_ARRAY =
	new ConnectionRole[] {
	MANDATORY_EDGE,
	MANDATORY_NODE,
	PASSED,
	PREFERRED_EDGE,
	PREFERRED_NODE,
	UNDEFINED,
	};

	/**
	* A public read-only list of all the '<em><b>Connection Role</b></em>' enumerators.
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @generated
	*/
	public static final List<ConnectionRole> VALUES = Collections.unmodifiableList(Arrays.asList(VALUES_ARRAY));

	/**
	* Returns the '<em><b>Connection Role</b></em>' literal with the specified literal value.
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @param literal the literal.
	* @return the matching enumerator or <code>null</code>.
	* @generated
	*/
	public static ConnectionRole get(String literal) {
	for (int i = 0; i < VALUES_ARRAY.length; ++i) {
	ConnectionRole result = VALUES_ARRAY[i];
	if (result.toString().equals(literal)) {
	return result;
	}
	}
	return null;
	}

	/**
	* Returns the '<em><b>Connection Role</b></em>' literal with the specified name.
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @param name the name.
	* @return the matching enumerator or <code>null</code>.
	* @generated
	*/
	public static ConnectionRole getByName(String name) {
	for (int i = 0; i < VALUES_ARRAY.length; ++i) {
	ConnectionRole result = VALUES_ARRAY[i];
	if (result.getName().equals(name)) {
	return result;
	}
	}
	return null;
	}

	/**
	* Returns the '<em><b>Connection Role</b></em>' literal with the specified integer value.
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @param value the integer value.
	* @return the matching enumerator or <code>null</code>.
	* @generated
	*/
	public static ConnectionRole get(int value) {
	switch (value) {
	case MANDATORY_EDGE_VALUE: return MANDATORY_EDGE;
	case MANDATORY_NODE_VALUE: return MANDATORY_NODE;
	case PASSED_VALUE: return PASSED;
	case PREFERRED_EDGE_VALUE: return PREFERRED_EDGE;
	case PREFERRED_NODE_VALUE: return PREFERRED_NODE;
	case UNDEFINED_VALUE: return UNDEFINED;
	}
	return null;
	}

	/**
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @generated
	*/
	private final int value;

	/**
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @generated
	*/
	private final String name;

	/**
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @generated
	*/
	private final String literal;

	/**
	* Only this class can construct instances.
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @generated
	*/
	private ConnectionRole(int value, String name, String literal) {
	this.value = value;
	this.name = name;
	this.literal = literal;
	}

	/**
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @generated
	*/
	@Override
	public int getValue() {
	return value;
	}

	/**
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @generated
	*/
	@Override
	public String getName() {
	return name;
	}

	/**
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @generated
	*/
	@Override
	public String getLiteral() {
	return literal;
	}

	/**
	* Returns the literal value of the enumerator, which is its string representation.
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @generated
	*/
	@Override
	public String toString() {
	return literal;
	}

	public @Nullable String getArrowhead() {
	return null;
	}

	@Override
	public @NonNull String getColor() {
	switch (this) {
	case MANDATORY_EDGE: return QVTscheduleConstants.ORDERING_COLOR;
	case MANDATORY_NODE: return QVTscheduleConstants.BINDING_COLOR;
	case PASSED: return QVTscheduleConstants.BINDING_COLOR;
	case PREFERRED_EDGE: return QVTscheduleConstants.ORDERING_COLOR;
	case PREFERRED_NODE: return QVTscheduleConstants.BINDING_COLOR;
	case UNDEFINED: return QVTscheduleConstants.OTHER_COLOR;
	}
	throw new UnsupportedOperationException();
	}

	public @Nullable String getLabel() {
	return null;
	}

	public @NonNull Integer getPenwidth() {
	return QVTscheduleConstants.LINE_WIDTH;
	}

	public @NonNull String getStereotype() {
	switch (this) {
	case MANDATORY_EDGE: return "«mandatory»";
	case MANDATORY_NODE: return "«mandatory»";
	case PASSED: return "«passed»";
	case PREFERRED_EDGE: return "«preferred»";
	case PREFERRED_NODE: return "«preferred»";
	}
	throw new UnsupportedOperationException();
	}

	/**
	* Return the line style with which this connection is drawn, null for solid.
	*/
	public @Nullable String getStyle() {
	switch (this) {
	case MANDATORY_EDGE: return "dashed";
	case MANDATORY_NODE: return "dashed";
	case PASSED: return null;
	case PREFERRED_EDGE: return "dotted";
	case PREFERRED_NODE: return "dotted";
	case UNDEFINED: return null;
	}
	throw new UnsupportedOperationException();
	}

	public boolean isMandatory() {
	switch (this) {
	case MANDATORY_EDGE: return true;
	case MANDATORY_NODE: return true;
	case PASSED: return false;
	case PREFERRED_EDGE: return false;
	case PREFERRED_NODE: return false;
	case UNDEFINED: return false;
	}
	throw new UnsupportedOperationException();
	}

	public boolean isPassed() {
	switch (this) {
	case MANDATORY_EDGE: return false;
	case MANDATORY_NODE: return false;
	case PASSED: return true;
	case PREFERRED_EDGE: return false;
	case PREFERRED_NODE: return false;
	case UNDEFINED: return false;
	}
	throw new UnsupportedOperationException();
	}

	public boolean isPreferred() {
	switch (this) {
	case MANDATORY_EDGE: return true;
	case MANDATORY_NODE: return true;
	case PASSED: return false;
	case PREFERRED_EDGE: return true;
	case PREFERRED_NODE: return true;
	case UNDEFINED: return false;
	}
	throw new UnsupportedOperationException();
	}

	public @NonNull ConnectionRole merge(@NonNull ConnectionRole connectionRoleEnum) {
	switch (this) {
	case MANDATORY_EDGE:
	case MANDATORY_NODE:{
	if (connectionRoleEnum.isPassed()) {
	return connectionRoleEnum;
	}
	if (connectionRoleEnum.isPreferred()) {
	return this;
	}
	break;
	}
	case PASSED: {
	if (connectionRoleEnum.isMandatory()) {
	return this;
	}
	if (connectionRoleEnum.isPreferred()) {
	return this;
	}
	break;
	}
	case PREFERRED_EDGE:
	case PREFERRED_NODE: {
	if (connectionRoleEnum.isPassed()) {
	return connectionRoleEnum;
	}
	if (connectionRoleEnum.isMandatory()) {
	return connectionRoleEnum;
	}
	break;
	}
	case UNDEFINED: {
	return connectionRoleEnum;
	}
	}
	throw new UnsupportedOperationException();
	}

	@Override
	public void appendEdgeAttributes(@NonNull ToGraphHelper toGraphHelper, @NonNull String sourceName, @NonNull String targetName) {
	GraphStringBuilder s = toGraphHelper.getGraphStringBuilder();
	toGraphHelper.setColor(this);
	String style = getStyle();
	if (style != null) {
	s.setStyle(style);
	}
	String arrowhead = getArrowhead();
	if (arrowhead != null) {
	s.setArrowhead(arrowhead);
	}
	s.setPenwidth(getPenwidth());
	s.appendAttributedEdge(sourceName, this, targetName);
	}


	@Override
	public @NonNull GraphNode getEdgeSource() {
	throw new UnsupportedOperationException();
	}

	@Override
	public @NonNull GraphNode getEdgeTarget() {
	throw new UnsupportedOperationException();
	}
	} //ConnectionRoleEnum