org.eclipse.jpt.jpa.eclipselink.ui.internal.details.EclipseLinkConverterStateObject.java Source code

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Here is the source code for org.eclipse.jpt.jpa.eclipselink.ui.internal.details.EclipseLinkConverterStateObject.java

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/*******************************************************************************
 * Copyright (c) 2008, 2013 Oracle. All rights reserved.
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0, which accompanies this distribution
 * and is available at http://www.eclipse.org/legal/epl-v10.html.
 *
 * Contributors:
 *     Oracle - initial API and implementation
 ******************************************************************************/
package org.eclipse.jpt.jpa.eclipselink.ui.internal.details;

import java.util.ArrayList;
import java.util.List;
import org.eclipse.jface.dialogs.IMessageProvider;
import org.eclipse.jpt.common.utility.internal.ArrayTools;
import org.eclipse.jpt.common.utility.internal.StringTools;
import org.eclipse.jpt.common.utility.internal.node.AbstractNode;
import org.eclipse.jpt.common.utility.node.Node;
import org.eclipse.jpt.jpa.eclipselink.core.context.EclipseLinkConvert;
import org.eclipse.jpt.jpa.eclipselink.core.context.EclipseLinkConverter;
import org.eclipse.jpt.jpa.eclipselink.core.context.EclipseLinkConverterContainer;
import org.eclipse.jpt.jpa.eclipselink.core.context.persistence.EclipseLinkPersistenceUnit;
import org.eclipse.jpt.jpa.eclipselink.ui.details.JptJpaEclipseLinkUiDetailsMessages;

/**
 * This is the state object used by the <code>EclipseLinkConverterDialog</code>, which stores
 * the current name and validates it when it is modified.
 *
 * @see EclipseLinkConverterDialog
 *
 * @version 3.2
 * @since 2.1
 */
final class EclipseLinkConverterStateObject extends AbstractNode {
    /**
     * The initial name or <code>null</code>
     */
    private String name;

    /**
     * The initial converterType or <code>null</code>
     */
    private Class<? extends EclipseLinkConverter> converterType;

    /**
     * The <code>Validator</code> used to validate this state object.
     */
    private Validator validator;

    /**
     * The associated converter container
     */
    private EclipseLinkConverterContainer converterContainer;

    /**
     * Notifies a change in the data value property.
     */
    static final String NAME_PROPERTY = "name"; //$NON-NLS-1$

    /**
     * Notifies a change in the object value property.
     */
    static final String CONVERTER_TYPE_PROPERTY = "converterType"; //$NON-NLS-1$

    EclipseLinkConverterStateObject(EclipseLinkConverterContainer converterContainer) {
        super(null);
        this.converterContainer = converterContainer;
    }

    private boolean addNumberOfConvertersProblemsTo(List<Problem> currentProblems) {
        if (this.converterContainer.getMaximumAllowedConverters() <= this.converterContainer.getConvertersSize()) {
            currentProblems.add(buildProblem(
                    JptJpaEclipseLinkUiDetailsMessages.ECLIPSELINK_CONVERTERS_COMPOSITE_MAX_CONVERTERS_ERROR_MESSAGE,
                    IMessageProvider.ERROR,
                    Integer.valueOf(this.converterContainer.getMaximumAllowedConverters())));
            return false;
        }
        return true;
    }

    private void addNameProblemsTo(List<Problem> currentProblems) {
        if (StringTools.isBlank(this.name)) {
            currentProblems.add(buildProblem(
                    JptJpaEclipseLinkUiDetailsMessages.ECLIPSELINK_CONVERTER_STATE_OBJECT_NAME_MUST_BE_SPECIFIED,
                    IMessageProvider.ERROR));
        } else if (names().contains(this.name)) {
            currentProblems.add(
                    buildProblem(JptJpaEclipseLinkUiDetailsMessages.ECLIPSELINK_CONVERTER_STATE_OBJECT_NAME_EXISTS,
                            IMessageProvider.WARNING));
        } else if (ArrayTools.contains(EclipseLinkConvert.RESERVED_CONVERTER_NAMES, this.name)) {
            currentProblems.add(buildProblem(
                    JptJpaEclipseLinkUiDetailsMessages.ECLIPSELINK_CONVERTER_STATE_OBJECT_NAME_IS_RESERVED,
                    IMessageProvider.ERROR));
        }
    }

    private void addConverterTypeProblemsTo(List<Problem> currentProblems) {
        if (this.converterType == null) {
            currentProblems.add(buildProblem(
                    JptJpaEclipseLinkUiDetailsMessages.ECLIPSELINK_CONVERTER_STATE_OBJECT_TYPE_MUST_BE_SPECIFIED,
                    IMessageProvider.ERROR));
        }
    }

    @Override
    protected void addProblemsTo(List<Problem> currentProblems) {
        super.addProblemsTo(currentProblems);
        boolean continueValidating = this.addNumberOfConvertersProblemsTo(currentProblems);
        if (continueValidating) {
            this.addNameProblemsTo(currentProblems);
            this.addConverterTypeProblemsTo(currentProblems);
        }
    }

    private List<String> names() {
        List<String> names = new ArrayList<String>();
        for (EclipseLinkConverter converter : this.getPersistenceUnit().getAllConverters()) {
            names.add(converter.getName());
        }
        return names;
    }

    private EclipseLinkPersistenceUnit getPersistenceUnit() {
        return (EclipseLinkPersistenceUnit) this.converterContainer.getPersistenceUnit();
    }

    @Override
    protected void checkParent(Node parentNode) {
        //no parent
    }

    public String displayString() {
        return null;
    }

    String getName() {
        return this.name;
    }

    Class<? extends EclipseLinkConverter> getConverterType() {
        return this.converterType;
    }

    public void setName(String newName) {
        String oldName = this.name;
        this.name = newName;
        firePropertyChanged(NAME_PROPERTY, oldName, newName);
    }

    public void setConverterType(Class<? extends EclipseLinkConverter> newConverterType) {
        Class<? extends EclipseLinkConverter> oldConverterType = this.converterType;
        this.converterType = newConverterType;
        firePropertyChanged(CONVERTER_TYPE_PROPERTY, oldConverterType, newConverterType);
    }

    @Override
    public void setValidator(Validator validator) {
        this.validator = validator;
    }

    @Override
    public Validator getValidator() {
        return this.validator;
    }
}