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The UML 1.4 metafacades. This is the set of UML 1.4 metafacades implementations. These implement the common UML metafacades.
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// license-header java merge-point
//
// Attention: generated code (by MetafacadeLogic.vsl) - do not modify!
//
package org.andromda.metafacades.uml14;

import java.util.Collection;
import org.andromda.core.metafacade.MetafacadeBase;
import org.andromda.core.metafacade.ModelValidationMessage;
import org.andromda.metafacades.uml.ConstraintFacade;
import org.andromda.metafacades.uml.ModelElementFacade;
import org.apache.log4j.Logger;
import org.omg.uml.foundation.core.Constraint;

/**
 * 
 * Condition or restriction expressed in natural language text or
 * in a machine readable language for the purpose of declaring some
 * of the semantics of an element.
 * 
 * MetafacadeLogic for ConstraintFacade
 *
 * @see ConstraintFacade
 */
public abstract class ConstraintFacadeLogic
    extends ModelElementFacadeLogicImpl
    implements ConstraintFacade
{
    /**
     * The underlying UML object
     * @see Constraint
     */
    protected Constraint metaObject;

    /** Create Metafacade implementation instance using the MetafacadeFactory from the context
     * @param metaObjectIn
     * @param context
     */
    protected ConstraintFacadeLogic(Constraint metaObjectIn, String context)
    {
        super(metaObjectIn, getContext(context));
        this.metaObject = metaObjectIn;
    }

    /**
     * The logger instance.
     */
    private static final Logger logger = Logger.getLogger(ConstraintFacadeLogic.class);

    /**
     * Gets the context for this metafacade logic instance.
     * @param context String. Set to ConstraintFacade if null
     * @return context String
     */
    private static String getContext(String context)
    {
        if (context == null)
        {
            context = "org.andromda.metafacades.uml.ConstraintFacade";
        }
        return context;
    }

    /** Reset context only for non-root metafacades
     * @param context
     */
    @Override
    public void resetMetafacadeContext(String context)
    {
        if (!this.contextRoot) // reset context only for non-root metafacades
        {
            context = getContext(context);  // to have same value as in original constructor call
            setMetafacadeContext (context);
        }
    }

    /**
     * @return boolean true always
     * @see ConstraintFacade
     */
    public boolean isConstraintFacadeMetaType()
    {
        return true;
    }

    // --------------- attributes ---------------------

   /**
    * @see ConstraintFacade#getBody()
    * @return String
    */
    protected abstract String handleGetBody();

    private String __body1a;
    private boolean __body1aSet = false;

    /**
     * 
     * Gets the 'body' or text of this constraint.
     * 
     * @return (String)handleGetBody()
     */
    public final String getBody()
    {
        String body1a = this.__body1a;
        if (!this.__body1aSet)
        {
            // body has no pre constraints
            body1a = handleGetBody();
            // body has no post constraints
            this.__body1a = body1a;
            if (isMetafacadePropertyCachingEnabled())
            {
                this.__body1aSet = true;
            }
        }
        return body1a;
    }

   /**
    * @see ConstraintFacade#isInvariant()
    * @return boolean
    */
    protected abstract boolean handleIsInvariant();

    private boolean __invariant2a;
    private boolean __invariant2aSet = false;

    /**
     * 
     * True if this constraint denotes an invariant.
     * 
     * 
     * For example:
     * 
     * 
     * 
     * 
     * 
     * context LivingAnimal
     * 
     * 
     * inv: alive = true
     * 
     * 
     * 
     * 
     * 
     * False otherwise.
     * 
     * @return (boolean)handleIsInvariant()
     */
    public final boolean isInvariant()
    {
        boolean invariant2a = this.__invariant2a;
        if (!this.__invariant2aSet)
        {
            // invariant has no pre constraints
            invariant2a = handleIsInvariant();
            // invariant has no post constraints
            this.__invariant2a = invariant2a;
            if (isMetafacadePropertyCachingEnabled())
            {
                this.__invariant2aSet = true;
            }
        }
        return invariant2a;
    }

   /**
    * @see ConstraintFacade#isPreCondition()
    * @return boolean
    */
    protected abstract boolean handleIsPreCondition();

    private boolean __preCondition3a;
    private boolean __preCondition3aSet = false;

    /**
     * 
     * True if this constraint denotes a precondition.
     * 
     * 
     * For example:
     * 
     * 
     * 
     * 
     * 
     * context LivingAnimal::canFly()
     * 
     * 
     * pre: hasWings = true
     * 
     * 
     * 
     * 
     * 
     * False otherwise.
     * 
     * @return (boolean)handleIsPreCondition()
     */
    public final boolean isPreCondition()
    {
        boolean preCondition3a = this.__preCondition3a;
        if (!this.__preCondition3aSet)
        {
            // preCondition has no pre constraints
            preCondition3a = handleIsPreCondition();
            // preCondition has no post constraints
            this.__preCondition3a = preCondition3a;
            if (isMetafacadePropertyCachingEnabled())
            {
                this.__preCondition3aSet = true;
            }
        }
        return preCondition3a;
    }

   /**
    * @see ConstraintFacade#isPostCondition()
    * @return boolean
    */
    protected abstract boolean handleIsPostCondition();

    private boolean __postCondition4a;
    private boolean __postCondition4aSet = false;

    /**
     * 
     * True if this constraint denotes a postcondition.
     * 
     * 
     * For example:
     * 
     * 
     * 
     * 
     * 
     * context LivingAnimal::getNumberOfLegs()
     * 
     * 
     * post: numberOfLegs >= 0
     * 
     * 
     * 
     * 
     * 
     * False otherwise.
     * 
     * @return (boolean)handleIsPostCondition()
     */
    public final boolean isPostCondition()
    {
        boolean postCondition4a = this.__postCondition4a;
        if (!this.__postCondition4aSet)
        {
            // postCondition has no pre constraints
            postCondition4a = handleIsPostCondition();
            // postCondition has no post constraints
            this.__postCondition4a = postCondition4a;
            if (isMetafacadePropertyCachingEnabled())
            {
                this.__postCondition4aSet = true;
            }
        }
        return postCondition4a;
    }

   /**
    * @see ConstraintFacade#isDefinition()
    * @return boolean
    */
    protected abstract boolean handleIsDefinition();

    private boolean __definition5a;
    private boolean __definition5aSet = false;

    /**
     * 
     * True if this constraint denotes a definition.
     * 
     * 
     * For example:
     * 
     * 
     * 
     * 
     * 
     * context CustomerCard
     * 
     * 
     * def: getTotalPoints(d: date) : Integer =
     * transaction->select(date.isAfter(d)).points->sum()
     * 
     * 
     * 
     * 
     * 
     * False otherwise.
     * 
     * @return (boolean)handleIsDefinition()
     */
    public final boolean isDefinition()
    {
        boolean definition5a = this.__definition5a;
        if (!this.__definition5aSet)
        {
            // definition has no pre constraints
            definition5a = handleIsDefinition();
            // definition has no post constraints
            this.__definition5a = definition5a;
            if (isMetafacadePropertyCachingEnabled())
            {
                this.__definition5aSet = true;
            }
        }
        return definition5a;
    }

   /**
    * @see ConstraintFacade#isBodyExpression()
    * @return boolean
    */
    protected abstract boolean handleIsBodyExpression();

    private boolean __bodyExpression6a;
    private boolean __bodyExpression6aSet = false;

    /**
     * 
     * True if this constraint denotes a body expression.
     * 
     * 
     * For example:
     * 
     * 
     * 
     * 
     * 
     * context CustomerCard:getTransaction(from:Date, until:Date)
     * 
     * 
     * body: transactions->select(date.isAfter(from) and
     * date.isBefore(until))
     * 
     * 
     * 
     * 
     * 
     * False otherwise.
     * 
     * @return (boolean)handleIsBodyExpression()
     */
    public final boolean isBodyExpression()
    {
        boolean bodyExpression6a = this.__bodyExpression6a;
        if (!this.__bodyExpression6aSet)
        {
            // bodyExpression has no pre constraints
            bodyExpression6a = handleIsBodyExpression();
            // bodyExpression has no post constraints
            this.__bodyExpression6a = bodyExpression6a;
            if (isMetafacadePropertyCachingEnabled())
            {
                this.__bodyExpression6aSet = true;
            }
        }
        return bodyExpression6a;
    }

    // ---------------- business methods ----------------------

    /**
     * Method to be implemented in descendants
     * 
     * This constraint's translation for the argument languange.
     * 
     * @param language
     * @return String
     */
    protected abstract String handleGetTranslation(String language);

    /**
     * 
     * This constraint's translation for the argument languange.
     * 
     * @param language String
     * 
     * The target language to which the OCL constraint is to be
     * translated.
     * 
     * @return handleGetTranslation(language)
     */
    public String getTranslation(String language)
    {
        // getTranslation has no pre constraints
        String returnValue = handleGetTranslation(language);
        // getTranslation has no post constraints
        return returnValue;
    }

    // ------------- associations ------------------

    /**
     * 
     * Gets all constraints belonging to the model element.
     * 
     * @return (ModelElementFacade)handleGetContextElement()
     */
    public final ModelElementFacade getContextElement()
    {
        ModelElementFacade getContextElement1r = null;
        // constraints has no pre constraints
        Object result = handleGetContextElement();
        MetafacadeBase shieldedResult = this.shieldedElement(result);
        try
        {
            getContextElement1r = (ModelElementFacade)shieldedResult;
        }
        catch (ClassCastException ex)
        {
            // Bad things happen if the metafacade type mapping in metafacades.xml is wrong - Warn
            ConstraintFacadeLogic.logger.warn("incorrect metafacade cast for ConstraintFacadeLogic.getContextElement ModelElementFacade " + result + ": " + shieldedResult);
        }
        // constraints has no post constraints
        return getContextElement1r;
    }

    /**
     * UML Specific type is transformed by shieldedElements to AndroMDA Metafacade type
     * @return Object
     */
    protected abstract Object handleGetContextElement();

    /**
     * @param validationMessages Collection
     * @see ModelElementFacadeLogicImpl#validateInvariants(Collection validationMessages)
     */
    @Override
    public void validateInvariants(Collection validationMessages)
    {
        super.validateInvariants(validationMessages);
    }
}