com.FalcoLabs.Fido.api.datastore.ComplexSelectColumn.java Source code

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Here is the source code for com.FalcoLabs.Fido.api.datastore.ComplexSelectColumn.java

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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * Copyright 2013 Falco Labs LLC
 *
 */

package com.FalcoLabs.Fido.api.datastore;

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

import org.apache.commons.lang3.StringUtils;

import com.FalcoLabs.Fido.api.datastore.Query.FilterOperator;
import com.FalcoLabs.Fido.api.datastore.Query.SortDirection;

// Retrieves data for a complex (multivalued) column value
class ComplexSelectColumn extends DataStoreColumn {

    /**
     * Instantiates a new complex select column.
     *
     * @param name the name
     */
    public ComplexSelectColumn(String name) {
        this.name = DataStoreColumn.getSimpleNameFromComplexName(name);
        this.type = String.class; // start out as string to read the pointer to the sub table
    }

    /**
     * Instantiates a new complex select column.
     *
     * @param name the name
     * @param value the value
     */
    public ComplexSelectColumn(String name, String value) {
        this(name);
        this.setValue(value);
    }

    /* (non-Javadoc)
     * @see com.FalcoLabs.Fido.api.datastore.DataStoreColumn#setValue(java.lang.Object)
     */
    @Override
    public void setValue(Object value) {
        if (value == null) {
            this.value = null;
            return;
        }
        String[] valueParts = ((String) value).split(",");
        Query query = new Query(valueParts[0]);
        query.addFilter("key", FilterOperator.EQUAL, StringUtils.join(valueParts, ',', 1, valueParts.length));
        query.addSort("order", SortDirection.ASCENDING);
        DatastoreClient client = new DatastoreClient();
        List<Object> values = new ArrayList<Object>();
        List<DataStoreRow> rows = client.select(query);
        for (DataStoreRow row : rows) {
            for (Map.Entry<String, DataStoreColumn> entry : row.getColumns().entrySet()) {
                switch (entry.getValue().getName()) {
                case DataStore.ENTITY_PROPERTY_KEY:
                case DataStore.ENTITY_PROPERTY_PARENT:
                    break;
                case "order":
                    break;
                default:
                    values.add(entry.getValue().getValue());
                }
            }
        }
        if (values.size() > 0) {
            this.type = values.get(0).getClass();
        }
        this.value = values;
        this.name = DataStoreColumn.decodedName(this.name);
    }
}