package org.argeo.server.dao;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public abstract class AbstractTabularDaoSupport extends
		AbstractMemoryDaoSupport {
	private Map<String, List<Object>> tabularView = new HashMap<String, List<Object>>();

	@Override
	protected Object findInternalRef(Reference reference) {
		TabularInternalReference tabReference = (TabularInternalReference) reference;
		return getFromTabularView(tabReference.getTargetTableName(),
				tabReference.getTargetRow());
	}

	protected Object getFromTabularView(String tableName, Integer row) {
		return tabularView.get(tableName).get(row - 2);
	}

	protected void registerInTabularView(String tableName, Object object) {
		if (!tabularView.containsKey(tableName))
			tabularView.put(tableName, new ArrayList<Object>());
		tabularView.get(tableName).add(object);
	}

	protected static class TabularInternalReference extends Reference {
		private String targetTableName;
		private Integer targetRow;

		public TabularInternalReference(Object object, String property,
				String targetSheet, Integer targetRow) {
			super(object, property, null);
			this.targetTableName = targetSheet;
			this.targetRow = targetRow;
		}

		public String getTargetTableName() {
			return targetTableName;
		}

		public Integer getTargetRow() {
			return targetRow;
		}

	}
}