/*******************************************************************************
 * Copyright (c) 2010 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.core.internal.jpa1.context;

import java.util.List;
import org.eclipse.jpt.jpa.core.context.BaseColumn;
import org.eclipse.jpt.jpa.core.context.PersistentAttribute;
import org.eclipse.jpt.jpa.core.internal.context.BaseColumnTextRangeResolver;
import org.eclipse.jpt.jpa.core.internal.jpa1.context.AbstractNamedColumnValidator.TableValidator;
import org.eclipse.jpt.jpa.core.internal.validation.DefaultJpaValidationMessages;
import org.eclipse.jpt.jpa.core.internal.validation.JpaValidationMessages;
import org.eclipse.wst.validation.internal.provisional.core.IMessage;
import org.eclipse.wst.validation.internal.provisional.core.IReporter;

public class BaseColumnTableValidator
	implements TableValidator
{
	protected final PersistentAttribute persistentAttribute;

	protected final BaseColumn column;

	protected final BaseColumnTextRangeResolver textRangeResolver;

	protected final TableDescriptionProvider tableDescriptionProvider;


	protected BaseColumnTableValidator(
			PersistentAttribute persistentAttribute,
			BaseColumn column,
			BaseColumnTextRangeResolver textRangeResolver,
			TableDescriptionProvider tableDescriptionProvider) {
		super();
		this.persistentAttribute = persistentAttribute;
		this.column = column;
		this.textRangeResolver = textRangeResolver;
		this.tableDescriptionProvider = tableDescriptionProvider;
	}

	protected boolean isPersistentAttributeVirtual() {
		return (this.persistentAttribute != null) && this.persistentAttribute.isVirtual();
	}

	protected String getPersistentAttributeName() {
		return this.persistentAttribute.getName();
	}

	public boolean tableNameIsInvalid() {
		return this.column.tableNameIsInvalid();
	}

	public boolean validate(List<IMessage> messages, IReporter reporter) {
		messages.add(this.buildTableNotValidMessage());
		return false;
	}

	public IMessage buildTableNotValidMessage() {
		if (this.isPersistentAttributeVirtual()) {
			return this.buildVirtualAttributeTableNotValidMessage();
		}
		return DefaultJpaValidationMessages.buildMessage(
				IMessage.HIGH_SEVERITY,
				this.getColumnTableNotValidMessage(),
				new String[] {
					this.column.getTable(),
					this.column.getName(),
					this.getColumnTableDescriptionMessage()
				},
				this.column,
				this.textRangeResolver.getTableTextRange()
			);
	}

	protected String getColumnTableNotValidMessage() {
		return JpaValidationMessages.COLUMN_TABLE_NOT_VALID;
	}

	protected String getColumnTableDescriptionMessage()  {
		return this.tableDescriptionProvider.getColumnTableDescriptionMessage();
	}

	protected IMessage buildVirtualAttributeTableNotValidMessage() {
		return DefaultJpaValidationMessages.buildMessage(
				IMessage.HIGH_SEVERITY,
				this.getVirtualAttributeColumnTableNotValidMessage(),
				new String[] {
					this.getPersistentAttributeName(),
					this.column.getTable(),
					this.column.getName(),
					this.getColumnTableDescriptionMessage()
				},
				this.column,
				this.textRangeResolver.getTableTextRange()
			);
	}

	protected String getVirtualAttributeColumnTableNotValidMessage() {
		return JpaValidationMessages.VIRTUAL_ATTRIBUTE_COLUMN_TABLE_NOT_VALID;
	}

	public static interface TableDescriptionProvider {
		String getColumnTableDescriptionMessage();
	}

	public static class NullTableDescriptionProvider implements TableDescriptionProvider {
		public String getColumnTableDescriptionMessage() {
			throw new UnsupportedOperationException();
		}
	}
}