de.akquinet.jbosscc.guttenbase.meta.builder.IndexMetaDataBuilder Maven / Gradle / Ivy

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package de.akquinet.jbosscc.guttenbase.meta.builder;

import java.util.ArrayList;
import java.util.List;

import de.akquinet.jbosscc.guttenbase.meta.InternalIndexMetaData;
import de.akquinet.jbosscc.guttenbase.meta.TableMetaData;
import de.akquinet.jbosscc.guttenbase.meta.impl.IndexMetaDataImpl;

/**
 * Builder class for IndexMetaData.
 * 
 * 
 * © 2012 akquinet tech@spree
 * 
 * 
 * @author M. Dahm
 */
public class IndexMetaDataBuilder {
	private String _indexName = "IDX";
	private boolean _ascending = false;
	private boolean _unique = false;
	private final List _columns = new ArrayList();
	private final TableMetaDataBuilder _tableMetaDataBuilder;
	private IndexMetaDataImpl _result;

	public IndexMetaDataBuilder(final TableMetaDataBuilder tableMetaDataBuilder) {
		_tableMetaDataBuilder = tableMetaDataBuilder;
	}

	public InternalIndexMetaData build() {
		if (_result == null) {
			final TableMetaData table = _tableMetaDataBuilder.build();
			_result = new IndexMetaDataImpl(table, _indexName, _ascending, _unique);

			for (final ColumnMetaDataBuilder columnMetaDataBuilder : _columns) {
				_result.addColumn(table.getColumnMetaData(columnMetaDataBuilder.getColumnName()));
			}
		}

		return _result;
	}

	public IndexMetaDataBuilder setIndexName(final String indexName) {
		_indexName = indexName;
		return this;
	}

	public IndexMetaDataBuilder setAscending(final boolean ascending) {
		_ascending = ascending;
		return this;
	}

	public IndexMetaDataBuilder setUnique(final boolean unique) {
		_unique = unique;
		return this;
	}

	public IndexMetaDataBuilder addColumn(final ColumnMetaDataBuilder columnMetaDataBuilder) {
		_columns.add(columnMetaDataBuilder);
		return this;
	}
}