com.glaf.dts.util.XmlReader.java Source code

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Here is the source code for com.glaf.dts.util.XmlReader.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.
 */

package com.glaf.dts.util;

import java.util.Iterator;
import java.util.List;
import java.util.Map;

import org.apache.commons.lang3.StringUtils;
import org.dom4j.Attribute;
import org.dom4j.Document;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;

import com.glaf.core.domain.ColumnDefinition;
import com.glaf.core.util.Tools;
import com.glaf.dts.domain.DataTransfer;

public class XmlReader {

    public DataTransfer read(java.io.InputStream inputStream) {
        DataTransfer tableModel = new DataTransfer();
        SAXReader xmlReader = new SAXReader();
        try {
            Document doc = xmlReader.read(inputStream);
            Element root = doc.getRootElement();
            Element element = root.element("entity");
            if (element != null) {
                List<?> attrs = element.attributes();
                if (attrs != null && !attrs.isEmpty()) {
                    Map<String, Object> dataMap = new java.util.HashMap<String, Object>();
                    Iterator<?> iter = attrs.iterator();
                    while (iter.hasNext()) {
                        Attribute attr = (Attribute) iter.next();
                        dataMap.put(attr.getName(), attr.getStringValue());
                        tableModel.addProperty(attr.getName(), attr.getStringValue());
                    }
                    Tools.populate(tableModel, dataMap);
                }

                tableModel.setEntityName(element.attributeValue("name"));
                tableModel.setPrimaryKey(element.attributeValue("primaryKey"));
                tableModel.setTableName(element.attributeValue("table"));
                tableModel.setTitle(element.attributeValue("title"));
                tableModel.setStopWord(element.attributeValue("stopWord"));
                tableModel.setPackageName(element.attributeValue("package"));
                tableModel.setEnglishTitle(element.attributeValue("englishTitle"));
                tableModel.setFilePrefix(element.attributeValue("filePrefix"));
                tableModel.setParseType(element.attributeValue("parseType"));
                tableModel.setParseClass(element.attributeValue("parseClass"));
                tableModel.setAggregationKeys(element.attributeValue("aggregationKeys"));
                tableModel.setSplit(element.attributeValue("split"));
                if (StringUtils.equals(element.attributeValue("insertOnly"), "true")) {
                    tableModel.setInsertOnly("true");
                }

                String startRow = element.attributeValue("startRow");
                if (StringUtils.isNotEmpty(startRow) && StringUtils.isNumeric(startRow)) {
                    tableModel.setStartRow(Integer.parseInt(startRow));
                }

                String stopSkipRow = element.attributeValue("stopSkipRow");
                if (StringUtils.isNotEmpty(stopSkipRow) && StringUtils.isNumeric(stopSkipRow)) {
                    tableModel.setStopSkipRow(Integer.parseInt(stopSkipRow));
                }

                String batchSize = element.attributeValue("batchSize");
                if (StringUtils.isNotEmpty(batchSize) && StringUtils.isNumeric(batchSize)) {
                    tableModel.setBatchSize(Integer.parseInt(batchSize));
                }

                List<?> excludes = element.elements("excludes");
                if (excludes != null && excludes.size() > 0) {
                    Iterator<?> iterator = excludes.iterator();
                    while (iterator.hasNext()) {
                        Element elem = (Element) iterator.next();
                        tableModel.addExclude(elem.getStringValue());
                    }
                }

                List<?> rows = element.elements("property");
                if (rows != null && rows.size() > 0) {
                    Iterator<?> iterator = rows.iterator();
                    while (iterator.hasNext()) {
                        Element elem = (Element) iterator.next();
                        ColumnDefinition field = new ColumnDefinition();
                        this.readField(elem, field);
                        tableModel.addColumn(field);
                        if (StringUtils.equalsIgnoreCase(tableModel.getPrimaryKey(), field.getColumnName())) {
                            tableModel.setIdColumn(field);
                        }
                    }
                }
            }

        } catch (Exception ex) {
            throw new RuntimeException(ex);
        }

        return tableModel;
    }

    protected void readField(Element elem, ColumnDefinition field) {
        List<?> attrs = elem.attributes();
        if (attrs != null && !attrs.isEmpty()) {
            Map<String, Object> dataMap = new java.util.HashMap<String, Object>();
            Iterator<?> iter = attrs.iterator();
            while (iter.hasNext()) {
                Attribute attr = (Attribute) iter.next();
                dataMap.put(attr.getName(), attr.getStringValue());
                field.addProperty(attr.getName(), attr.getStringValue());
            }
            Tools.populate(field, dataMap);
        }

        field.setName(elem.attributeValue("name"));
        field.setType(elem.attributeValue("type"));
        field.setColumnName(elem.attributeValue("column"));
        field.setTitle(elem.attributeValue("title"));
        field.setValueExpression(elem.attributeValue("valueExpression"));

        /**
         * 
         */
        if ("true".equals(elem.attributeValue("required"))) {
            field.setRequired(true);
        }

        String length = elem.attributeValue("length");
        if (StringUtils.isNotEmpty(length) && StringUtils.isNumeric(length)) {
            field.setLength(Integer.parseInt(length));
        }

        String nullable = elem.attributeValue("nullable");
        if (StringUtils.isNotEmpty(nullable)) {
            if (StringUtils.equalsIgnoreCase(nullable, "true")) {
                field.setNullable(true);
                field.setNullableField("true");
            } else {
                field.setNullable(false);
                field.setNullableField("false");
            }
        }

        String position = elem.attributeValue("position");
        if (StringUtils.isNotEmpty(position) && StringUtils.isNumeric(position)) {
            field.setPosition(Integer.parseInt(position));
        }

        String precision = elem.attributeValue("precision");
        if (StringUtils.isNotEmpty(precision) && StringUtils.isNumeric(precision)) {
            field.setPrecision(Integer.parseInt(precision));
        }

    }
}