org.eclipse.jpt.jpa.ui.internal.details.AddQueryStateObject.java Source code

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

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/*******************************************************************************
 * Copyright (c) 2009, 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.ui.internal.details;

import java.util.ArrayList;
import java.util.List;
import org.eclipse.jface.dialogs.IMessageProvider;
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.core.context.Query;
import org.eclipse.jpt.jpa.core.context.persistence.PersistenceUnit;
import org.eclipse.jpt.jpa.ui.details.JptJpaUiDetailsMessages;

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

    /**
     * The initial queryType or <code>null</code>
     */
    private String queryType;

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

    /**
     * The associated persistence unit
     */
    private PersistenceUnit pUnit;

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

    /**
     * Notifies a change in the query type property.
     */
    static final String QUERY_TYPE_PROPERTY = "queryTypeProperty"; //$NON-NLS-1$

    /**
     * Creates a new <code>NewNameStateObject</code>.
     *
     * @param name The initial input or <code>null</code> if no initial value can
     * be specified
     * @param names The collection of names that can't be used or an empty
     * collection if none are available
     */
    public AddQueryStateObject(PersistenceUnit pUnit) {
        super(null);
        this.pUnit = pUnit;
    }

    private void addNameProblemsTo(List<Problem> currentProblems) {
        if (StringTools.isBlank(this.name)) {
            currentProblems.add(buildProblem(JptJpaUiDetailsMessages.QueryStateObject_nameMustBeSpecified,
                    IMessageProvider.ERROR));
        } else if (names().contains(this.name)) {
            currentProblems
                    .add(buildProblem(JptJpaUiDetailsMessages.AddQueryDialog_nameExists, IMessageProvider.WARNING));
        }
    }

    private void addQueryTypeProblemsTo(List<Problem> currentProblems) {
        if (StringTools.isBlank(this.queryType)) {
            currentProblems.add(buildProblem(JptJpaUiDetailsMessages.QueryStateObject_typeMustBeSpecified,
                    IMessageProvider.ERROR));
        }
    }

    @Override
    protected void addProblemsTo(List<Problem> currentProblems) {
        super.addProblemsTo(currentProblems);
        addNameProblemsTo(currentProblems);
        addQueryTypeProblemsTo(currentProblems);
    }

    private List<String> names() {
        List<String> names = new ArrayList<String>();
        for (Query query : this.pUnit.getQueries()) {
            String name = query.getName();
            names.add(name);
        }
        return names;
    }

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

    public String displayString() {
        return null;
    }

    String getName() {
        return this.name;
    }

    String getQueryType() {
        return this.queryType;
    }

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

    public void setQueryType(String newQueryType) {
        String old = this.queryType;
        this.queryType = newQueryType;
        firePropertyChanged(QUERY_TYPE_PROPERTY, old, newQueryType);
    }

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

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