Android生成テーブルに対応するクラスとアクセステーブルに対応するクラス
これまでの紙面でも、Androidを開発したプロジェクトの中で、手書き表に対応する種類と訪問表に対応する種類は、大量に重複した作業であり、属性、set方法、get方法、ラベルCurorからデータを取得して表の対応する対象に保存し、表の対応する対象をContentValuesに保存し、開発の中でこれらのコードに時間を浪費する必要はないと思います.だから、ネットで探しました.上記の二つの種類のツールを生成したかどうかを見ましたが、見つけられませんでした.そして、自分で3日間以上の時間をかけて自分で書きました.
主な実現メカニズムはXMLファイルをカスタマイズしています.このXMLには表、列などの属性があります.解析的に作成するために必要なものがあります.
カスタムXMLをより完璧にするために、自分でDMDを勉強しました.今書いたDMDは完璧ではないかもしれません.簡単な表を作るために必要な要素だけです.
コードを貼り付けて、みんなと共有して、みんなの助けのもとでこの東をもっと完璧にしたいです.
使用手順:
＜1＞DMDファイルを使ってデータベースxmlファイルを生成します.
＜2＞Jt SqlityUtils類のcreateClassを使って実体類を生成する
主な実現メカニズムはXMLファイルをカスタマイズしています.このXMLには表、列などの属性があります.解析的に作成するために必要なものがあります.
カスタムXMLをより完璧にするために、自分でDMDを勉強しました.今書いたDMDは完璧ではないかもしれません.簡単な表を作るために必要な要素だけです.
コードを貼り付けて、みんなと共有して、みんなの助けのもとでこの東をもっと完璧にしたいです.
package com.jingtuo.android.common.db;
import java.util.List;
import java.util.Map;
/**
*
* @author JingTuo
*
*/
public class JtSqlite {
private String name;
private List<Table> tables;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public List<Table> getTables() {
return tables;
}
public void setTables(List<Table> tables) {
this.tables = tables;
}
/**
*
* @author JingTuo
*
*/
public static class Table {
private List<Column> columns;
private Map<String, String> attributes;
private String primarykey;
public List<Column> getColumns() {
return columns;
}
public void setColumns(List<Column> columns) {
this.columns = columns;
}
public Map<String, String> getAttributes() {
return attributes;
}
public void setAttributes(Map<String, String> attributes) {
this.attributes = attributes;
}
public String getPrimarykey() {
return primarykey;
}
public void setPrimarykey(String primarykey) {
this.primarykey = primarykey;
}
/**
*
* @author JingTuo
*
*/
public static class Column{
private String javaType;
private Map<String, String> attributes;
public String getJavaType() {
return javaType;
}
public void setJavaType(String javaType) {
this.javaType = javaType;
}
public Map<String, String> getAttributes() {
return attributes;
}
public void setAttributes(Map<String, String> attributes) {
this.attributes = attributes;
}
}
}
}
package com.jingtuo.android.common.db;
import java.io.File;
import java.io.FileWriter;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xmlpull.v1.XmlPullParser;
import com.jingtuo.android.common.db.JtSqlite.Table;
import com.jingtuo.android.common.db.JtSqlite.Table.Column;
import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
/**
* 、 、 <br>
* Android ， <br>
* Web ( Win32) ， ， ， sqlitejdbc.jar sqlitejdbc.dll。
*
* @author JingTuo
*
*/
public class JtSqliteUtils {
public static final String TAG_DB = "db";
public static final String TAG_TABLE = "table";
public static final String TAG_COLUMN = "column";
public static final String TAG_PRIMARYKEY = "primary_key";
public static final String ATTR_NAME = "name";
public static final String ATTR_DATATYPE = "datatype";
public static final String ATTR_COMMENT = "comment";
public static final String ATTR_DEFAULT = "default";
public static final String ATTR_CONSTRAINT = "constraint";
public static final String ATTR_COLUMN = "column";
private static String path;
/**
*
* @param path
*/
public static void setPath(String path) {
JtSqliteUtils.path = path;
}
/**
*
* @param path
* @param sqls
*/
public static void createDB(String path, List<String> sqls) {
SQLiteDatabase db = SQLiteDatabase.openOrCreateDatabase(path, null, null);
if (sqls != null && sqls.size() >= 1) {
for (int i = 0; i < sqls.size(); i++) {
db.execSQL(sqls.get(i));
}
}
JtSqliteUtils.path = path;
}
/**
*
*
* @return
*/
public static SQLiteDatabase getRoDb() {
return SQLiteDatabase.openDatabase(path, null, SQLiteDatabase.OPEN_READONLY);
}
/**
*
*
* @return
*/
public static SQLiteDatabase getRwDb() {
return SQLiteDatabase.openDatabase(path, null, SQLiteDatabase.OPEN_READWRITE);
}
/**
* xmlpullparser
*
* @param xmlPath
* @return
*/
public static JtSqlite getDB(Context context, int xmlId) {
JtSqlite db = new JtSqlite();
try {
XmlPullParser parser = context.getResources().getXml(xmlId);
int eventType = parser.getEventType();
String startTag = null;
String endTag = null;
List<Table> tables = new ArrayList<Table>();
Table table = null;
Column column = null;
while (eventType != XmlPullParser.END_DOCUMENT) {
switch (eventType) {
case XmlPullParser.START_DOCUMENT:
eventType = parser.next();
break;
case XmlPullParser.START_TAG:
startTag = parser.getName();
if (startTag.equals(TAG_DB)) {//
db.setName(getValue(parser, ATTR_NAME));
} else if (startTag.equals(TAG_TABLE)) {//
table = new Table();
Map<String, String> map = new HashMap<String, String>();
for (int i = 0; i < parser.getAttributeCount(); i++) {
map.put(parser.getAttributeName(i), parser.getAttributeValue(i));
}
table.setAttributes(map);
table.setColumns(new ArrayList<Column>());
} else if (startTag.equals(TAG_COLUMN)) {//
column = new Column();
Map<String, String> map = new HashMap<String, String>();
for (int i = 0; i < parser.getAttributeCount(); i++) {
map.put(parser.getAttributeName(i), parser.getAttributeValue(i));
}
column.setAttributes(map);
table.getColumns().add(column);
} else if (startTag.equals(TAG_PRIMARYKEY)) {
String name = parser.getAttributeName(0);
if (name.equals(ATTR_COLUMN)) {
table.setPrimarykey(parser.getAttributeValue(0));
}
} else {//
}
eventType = parser.next();
break;
case XmlPullParser.END_TAG:
endTag = parser.getName();
if (endTag.equals(TAG_TABLE)) {
tables.add(table);
}
eventType = parser.next();
break;
case XmlPullParser.TEXT:
eventType = parser.next();
break;
default:
break;
}
}
db.setTables(tables);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return db;
}
/**
* dom
*
* @param xmlPath
* @return
*/
public static JtSqlite getDBbyDomParser(String xmlPath) {
JtSqlite db = new JtSqlite();
try {
DocumentBuilderFactory builderFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = builderFactory.newDocumentBuilder();
Document document = builder.parse(new File(xmlPath));
Element root = document.getDocumentElement();
db.setName(root.getAttribute(ATTR_NAME));
List<Table> tables = new ArrayList<Table>();
NodeList tableList = root.getChildNodes();
Node tableNode = null;
Node child = null;
if (tableList != null && tableList.getLength() >= 1) {
for (int i = 0; i < tableList.getLength(); i++) {
tableNode = tableList.item(i);
if (TAG_TABLE.equals(tableNode.getNodeName())) {
Table table = new Table();
//
table.setAttributes(getAttributes(tableNode));
//
NodeList columnList = tableNode.getChildNodes();
List<Column> columns = new ArrayList<Column>();
if (columnList != null && columnList.getLength() >= 1) {
for (int j = 0; j < columnList.getLength(); j++) {
child = columnList.item(j);
if (TAG_COLUMN.equals(child.getNodeName())) {
Column column = new Column();
column.setAttributes(getAttributes(child));
column.setJavaType(toJavaType(column.getAttributes().get(ATTR_DATATYPE)));
columns.add(column);
} else if (TAG_PRIMARYKEY.equals(child.getNodeName())) {
table.setPrimarykey(getAttributes(child).get(ATTR_COLUMN));
} else {
continue;
}
}
}
table.setColumns(columns);
tables.add(table);
} else {
continue;
}
}
}
db.setTables(tables);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return db;
}
/**
* xml id sql
*
* @param file
*/
public static List<String> createSQL(JtSqlite db) {
List<String> list = new ArrayList<String>();
try {
StringBuilder stringBuilder = null;
List<Table> tables = db.getTables();
if (tables != null && tables.size() >= 1) {
for (int i = 0; i < tables.size(); i++) {
Table table = tables.get(i);
stringBuilder = new StringBuilder();
stringBuilder.append("CREATE TABLE IF NOT EXISTS " + table.getAttributes().get(ATTR_NAME) + "(");
List<Column> columns = table.getColumns();
if (columns != null && columns.size() >= 1) {
for (int j = 0; j < columns.size(); j++) {
Column column = columns.get(j);
//
String name = column.getAttributes().get(ATTR_NAME);
if (name != null) {
stringBuilder.append(name);
}
//
String type = column.getAttributes().get(ATTR_DATATYPE);
if (type != null) {
stringBuilder.append(" " + type);
}
//
String constraint = column.getAttributes().get(ATTR_CONSTRAINT);
if (constraint != null) {
if (constraint.equals("NOTNULL")) {
constraint = "NOT NULL";
}
stringBuilder.append(" " + constraint);
}
String def = column.getAttributes().get(ATTR_DEFAULT);
if (def != null) {
stringBuilder.append(" DEFAULT(" + def + ")");
}
stringBuilder.append(",");
}
}
String sql = null;
if (table.getPrimarykey() != null) {
stringBuilder.append("PRIMARY KEY(" + table.getPrimarykey() + ")");
stringBuilder.append(")");
sql = stringBuilder.toString();
} else {
sql = stringBuilder.toString();
sql = sql.substring(0, sql.length() - 1) + ")";
}
list.add(sql);
}
}
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return list;
}
/**
* ，
*
* @param xmlPath
* @param srcPath
* @param packageName
*/
public static void createClass(String xmlPath, String srcPath, String packageName) {
try {
String packagePath = null;
File packageFile = null;
if (srcPath.endsWith("\\") || srcPath.endsWith("/")) {
srcPath = srcPath.substring(0, srcPath.length() - 1);
}
if (packageName != null) {
packagePath = srcPath + "/" + packageName.replaceAll("\\.", "/");
} else {
packagePath = srcPath;
}
packageFile = new File(packagePath);
if (!packageFile.exists()) {//
packageFile.mkdirs();
} else {// ，
File[] files = packageFile.listFiles();
for (int i = 0; i < files.length; i++) {
if (files[i].exists()) {
files[i].delete();
}
}
}
//
File tableFolder = new File(packageFile, "table");
File accessFolder = new File(packageFile, "access");
tableFolder.mkdir();
accessFolder.mkdir();
JtSqlite db = getDBbyDomParser(xmlPath);
List<Table> tables = db.getTables();
if (tables == null || tables.size() <= 0) {
return;
}
//
for (int i = 0; i < tables.size(); i++) {
Table table = tables.get(i);
Map<String, String> tableAttributes = table.getAttributes();
String tableName = tableAttributes.get(ATTR_NAME);
String className = firstUpperCase(tableName) + "Base";
String comment = tableAttributes.get(ATTR_COMMENT);
if (comment == null) {
comment = "";
}
// --
StringBuilder stringBuilder = new StringBuilder();
stringBuilder.append("package " + packageName + ".table;
");
stringBuilder.append("/**
");
stringBuilder.append(" * primary key(" + table.getPrimarykey() + ")
");
stringBuilder.append(" * " + comment + "
");
stringBuilder.append(" * @author JingTuo
");
stringBuilder.append(" */
");
stringBuilder.append("public class " + className + " {
");
List<Column> columns = table.getColumns();
if (columns != null && columns.size() >= 1) {
for (int j = 0; j < columns.size(); j++) {
Column column = table.getColumns().get(j);
Map<String, String> columnAttributes = column.getAttributes();
String columnName = columnAttributes.get(ATTR_NAME);
//
comment = columnAttributes.get(ATTR_COMMENT);
if (comment == null) {
comment = "";
}
//
String def = columnAttributes.get(ATTR_DEFAULT);
if (def == null) {
if ("String".equals(column.getJavaType()) || "byte[]".equals(column.getJavaType())) {
def = "null";
} else if ("int".equals(column.getJavaType())) {
def = "0";
} else if ("float".equals(column.getJavaType())) {
def = "0.0f";
} else {
def = "null";
}
}
stringBuilder.append("\t/**
");
stringBuilder.append("\t *" + comment + "
");
stringBuilder.append("\t */
");
stringBuilder.append("\tprivate " + column.getJavaType() + " " + columnName + " = " + def + ";
");
stringBuilder.append("\tpublic void set" + firstUpperCase(columnName) + "(" + column.getJavaType() + " " + columnName
+ "){
");
stringBuilder.append("\t\tthis." + columnName + " = " + columnName + ";
");
stringBuilder.append("\t}
");
stringBuilder.append("\tpublic " + column.getJavaType() + " get" + firstUpperCase(columnName) + "(){
");
stringBuilder.append("\t\treturn this." + columnName + ";
");
stringBuilder.append("\t}
");
}
}
stringBuilder.append("}");
File tableFile = new File(tableFolder, className + ".java");
packageFile.createNewFile();
FileWriter fileWriter = new FileWriter(tableFile);
fileWriter.write(stringBuilder.toString());
fileWriter.flush();
fileWriter.close();
// --
stringBuilder = new StringBuilder();
stringBuilder.append("package " + packageName + ".access;
");
stringBuilder.append("import com.jingtuo.android.common.db.JtSqliteUtils;
");
stringBuilder.append("import com.jingtuo.android.db.table." + className + ";
");
stringBuilder.append("import android.content.ContentValues;
");
stringBuilder.append("import android.database.Cursor;
");
stringBuilder.append("import android.database.sqlite.SQLiteDatabase;
");
stringBuilder.append("import java.util.ArrayList;
");
stringBuilder.append("import java.util.List;
");
String accessClassName = firstUpperCase(tableName) + "AccessBase";
stringBuilder.append("
");
stringBuilder.append("/**
");
stringBuilder.append(" *
");
stringBuilder.append(" * @author JingTuo
");
stringBuilder.append(" */
");
stringBuilder.append("public class " + accessClassName + " {
");
String objName = firstLowerCase(tableName);
// find
stringBuilder.append("\tpublic static " + className + " find(");
String primarykey = table.getPrimarykey();
String[] array = primarykey.split(",");
String temp = "";
for (int j = 0; j < array.length; j++) {
temp += getJavaType(array[j], table.getColumns()) + " " + array[j] + ",";
}
temp = temp.substring(0, temp.length() - 1);
stringBuilder.append(temp + "){
");
stringBuilder.append("\t\t" + className + " " + objName + " = null;
");
stringBuilder.append("\t\tSQLiteDatabase db = null;
");
stringBuilder.append("\t\tCursor cursor = null;
");
stringBuilder.append("\t\ttry{
");
stringBuilder.append("\t\t\tdb = JtSqliteUtils.getRoDb();
");
stringBuilder.append("\t\t\tcursor = db.query(\"" + tableName + "\",null,\"");
//
String where = "";
for (int j = 0; j < array.length; j++) {
where += array[j] + "=? and ";
}
where = where.substring(0, where.length() - 5);
stringBuilder.append(where + "\", new String[]{");
//
temp = "";
for (int j = 0; j < array.length; j++) {
temp += array[j] + " + \"\",";
}
temp = temp.substring(0, temp.length() - 1);
stringBuilder.append(temp + "},null,null,null);
");
stringBuilder.append("\t\t\tif(cursor!=null&&cursor.moveToNext()){
");
stringBuilder.append("\t\t\t\t" + objName + " = toObject(cursor);
");
stringBuilder.append("\t\t\t}
");
stringBuilder.append("\t\t}catch(Exception e){
");
stringBuilder.append("\t\t\te.printStackTrace();
");
stringBuilder.append("\t\t}finally{
");
stringBuilder.append("\t\t\tif(cursor!=null){
");
stringBuilder.append("\t\t\t\tcursor.close();
");
stringBuilder.append("\t\t\t}
");
stringBuilder.append("\t\t\tif(db!=null){
");
stringBuilder.append("\t\t\t\tdb.close();
");
stringBuilder.append("\t\t\t}
");
stringBuilder.append("\t\t}
");
stringBuilder.append("\t\treturn " + objName + ";
");
stringBuilder.append("\t}
");
//
stringBuilder.append("\tpublic static List<" + className + "> find(String where, String[] whereValues){
");
stringBuilder.append("\t\t" + className + " " + objName + " = null;
");
stringBuilder.append("\t\tSQLiteDatabase db = null;
");
stringBuilder.append("\t\tCursor cursor = null;
");
stringBuilder.append("\t\tList<" + className + "> result = new ArrayList<" + className + ">();
");
stringBuilder.append("\t\ttry{
");
stringBuilder.append("\t\t\tdb = JtSqliteUtils.getRoDb();
");
stringBuilder.append("\t\t\tcursor = db.query(\"" + tableName + "\",null,where,whereValues,null,null,null);
");
stringBuilder.append("\t\t\twhile(cursor!=null&&cursor.moveToNext()){
");
stringBuilder.append("\t\t\t\t" + objName + " = toObject(cursor);
");
stringBuilder.append("\t\t\t\tresult.add(" + objName + ");
");
stringBuilder.append("\t\t\t}
");
stringBuilder.append("\t\t}catch(Exception e){
");
stringBuilder.append("\t\t\te.printStackTrace();
");
stringBuilder.append("\t\t}finally{
");
stringBuilder.append("\t\t\tif(cursor!=null){
");
stringBuilder.append("\t\t\t\tcursor.close();
");
stringBuilder.append("\t\t\t}
");
stringBuilder.append("\t\t\tif(db!=null){
");
stringBuilder.append("\t\t\t\tdb.close();
");
stringBuilder.append("\t\t\t}
");
stringBuilder.append("\t\t}
");
stringBuilder.append("\t\treturn result;
");
stringBuilder.append("\t}
");
// insert
stringBuilder.append("\tpublic static void insert(" + className + " " + objName + "){
");
stringBuilder.append("\t\tSQLiteDatabase db = null;
");
stringBuilder.append("\t\ttry{
");
stringBuilder.append("\t\t\tdb = JtSqliteUtils.getRwDb();
");
stringBuilder.append("\t\t\tdb.beginTransaction();
");
stringBuilder.append("\t\t\tdb.insert(\"" + tableName + "\", null, toValues(" + objName + "));
");
stringBuilder.append("\t\t\tdb.setTransactionSuccessful();
");
stringBuilder.append("\t\t}catch(Exception e){
");
stringBuilder.append("\t\t\te.printStackTrace();
");
stringBuilder.append("\t\t}finally{
");
stringBuilder.append("\t\t\tif(db!=null){
");
stringBuilder.append("\t\t\t\tdb.endTransaction();
");
stringBuilder.append("\t\t\t\tdb.close();
");
stringBuilder.append("\t\t\t}
");
stringBuilder.append("\t\t}
");
stringBuilder.append("\t}
");
// update
stringBuilder.append("\tpublic static void update(" + className + " " + objName + "){
");
stringBuilder.append("\t\tSQLiteDatabase db = null;
");
stringBuilder.append("\t\ttry{
");
stringBuilder.append("\t\t\tdb = JtSqliteUtils.getRwDb();
");
stringBuilder.append("\t\t\tdb.beginTransaction();
");
String whereValues = "";
for (int j = 0; j < array.length; j++) {
whereValues += objName + ".get" + firstUpperCase(array[j]) + "() + \"\",";
}
whereValues = whereValues.substring(0, whereValues.length() - 1);
stringBuilder.append("\t\t\tdb.update(\"" + tableName + "\", toValues(" + objName + "), \"" + where + "\", new String[]{"
+ whereValues + "});
");
stringBuilder.append("\t\t\tdb.setTransactionSuccessful();
");
stringBuilder.append("\t\t}catch(Exception e){
");
stringBuilder.append("\t\t\te.printStackTrace();
");
stringBuilder.append("\t\t}finally{
");
stringBuilder.append("\t\t\tif(db!=null){
");
stringBuilder.append("\t\t\t\tdb.endTransaction();
");
stringBuilder.append("\t\t\t\tdb.close();
");
stringBuilder.append("\t\t\t}
");
stringBuilder.append("\t\t}
");
stringBuilder.append("\t}
");
// delelte
stringBuilder.append("\tpublic static void delete(String where, String[] whereValues){
");
stringBuilder.append("\t\tSQLiteDatabase db = null;
");
stringBuilder.append("\t\ttry{
");
stringBuilder.append("\t\t\tdb = JtSqliteUtils.getRwDb();
");
stringBuilder.append("\t\t\tdb.beginTransaction();
");
stringBuilder.append("\t\t\tdb.delete(\"" + tableName + "\", where, whereValues);
");
stringBuilder.append("\t\t\tdb.setTransactionSuccessful();
");
stringBuilder.append("\t\t}catch(Exception e){
");
stringBuilder.append("\t\t\te.printStackTrace();
");
stringBuilder.append("\t\t}finally{
");
stringBuilder.append("\t\t\tif(db!=null){
");
stringBuilder.append("\t\t\t\tdb.endTransaction();
");
stringBuilder.append("\t\t\t\tdb.close();
");
stringBuilder.append("\t\t\t}
");
stringBuilder.append("\t\t}
");
stringBuilder.append("\t}
");
// toObject
stringBuilder.append("\tpublic static " + className + " toObject(Cursor cursor){
");
stringBuilder.append("\t\t" + className + " " + objName + " = new " + className + "();
");
if (columns != null && columns.size() >= 1) {
for (int j = 0; j < columns.size(); j++) {
Column column = columns.get(j);
String columnName = column.getAttributes().get(ATTR_NAME);
stringBuilder.append("\t\t" + objName + ".set" + firstUpperCase(columnName) + "(cursor.get");
if (column.getJavaType().equals("byte[]")) {
stringBuilder.append("Blob");
} else {
stringBuilder.append(firstUpperCase(column.getJavaType()));
}
stringBuilder.append("(cursor.getColumnIndex(\"" + columnName + "\")));
");
}
}
stringBuilder.append("\t\treturn " + objName + ";
");
stringBuilder.append("\t}
");
// toValues
stringBuilder.append("\tpublic static ContentValues toValues(" + className + " " + objName + "){
");
stringBuilder.append("\t\tContentValues values = new ContentValues();
");
stringBuilder.append("\t\tif(" + objName + "!=null){
");
if (columns != null && columns.size() >= 1) {
for (int j = 0; j < columns.size(); j++) {
Column column = columns.get(j);
String columnName = column.getAttributes().get(ATTR_NAME);
stringBuilder.append("\t\t\tvalues.put(\"" + columnName + "\", " + objName + ".get" + firstUpperCase(columnName) + "());
");
}
}
stringBuilder.append("\t\t}
");
stringBuilder.append("\t\treturn values;
");
stringBuilder.append("\t}
");
stringBuilder.append("}
");
File accessFile = new File(accessFolder, accessClassName + ".java");
fileWriter = new FileWriter(accessFile);
fileWriter.write(stringBuilder.toString());
fileWriter.flush();
fileWriter.close();
}
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
/**
*
*
* @param node
* @return
*/
public static Map<String, String> getAttributes(Node node) {
Map<String, String> map = new HashMap<String, String>();
if (node != null) {
NamedNodeMap namedNodeMap = node.getAttributes();
for (int i = 0; i < namedNodeMap.getLength(); i++) {
Node attr = namedNodeMap.item(i);
map.put(attr.getNodeName(), attr.getNodeValue());
}
}
return map;
}
/**
* name
*
* @param parser
* @param name
* @return
*/
public static String getValue(XmlPullParser parser, String name) {
if (parser != null && name != null && !name.equals("")) {
for (int i = 0; i < parser.getAttributeCount(); i++) {
if (name.equals(parser.getAttributeName(i))) {
return parser.getAttributeValue(i);
}
}
}
return "";
}
/**
* Java
*
* @param dataType
* @return
*/
public static String toJavaType(String dataType) {
//
String javaType = null;
if ("TEXT".equals(dataType)) {
javaType = "String";
} else if ("INTEGER".equals(dataType)) {
javaType = "int";
} else if ("REAL".equals(dataType)) {
javaType = "float";
} else if ("BLOB".equals(dataType)) {
javaType = "byte[]";
} else {
javaType = "Object";
}
return javaType;
}
/**
* Java
*
* @param columnName
* @param columns
* @return
*/
public static String getJavaType(String columnName, List<Column> columns) {
if (columnName != null && !columnName.equals("") && columns != null && columns.size() >= 1) {
for (int i = 0; i < columns.size(); i++) {
if (columnName.equals(columns.get(i).getAttributes().get(ATTR_NAME))) {
if (columns.get(i).getJavaType() == null) {
return "Object";
} else {
return columns.get(i).getJavaType();
}
}
}
}
return "Object";
}
/**
*
*
* @param source
* @return
*/
public static String firstUpperCase(String source) {
String result = null;
if (source != null && !source.equals("")) {
if (source.length() == 1) {
result = source.substring(0, 1).toUpperCase(Locale.getDefault());
} else {
result = source.substring(0, 1).toUpperCase(Locale.getDefault()) + source.substring(1);
}
} else {
result = source;
}
return result;
}
/**
*
*
* @param source
* @return
*/
public static String firstLowerCase(String source) {
String result = null;
if (source != null && !source.equals("")) {
if (source.length() == 1) {
result = source.substring(0, 1).toLowerCase(Locale.getDefault());
} else {
result = source.substring(0, 1).toLowerCase(Locale.getDefault()) + source.substring(1);
}
} else {
result = source;
}
return result;
}
/**
*
* @param dbFilePath
*
* @param xmlPath
* xml
*/
public static void createDbByJDBC(String dbFilePath, String xmlPath) {
File dbFile = new File(dbFilePath);
if (dbFile.exists()) {
dbFile.delete();
}
try {
dbFile.createNewFile();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
JtSqlite db = getDBbyDomParser(xmlPath);
Connection connection = null;
Statement statement = null;
List<String> sqls = createSQL(db);
try {
Class.forName("org.sqlite.JDBC");
connection = DriverManager.getConnection("jdbc:sqlite:" + dbFilePath);
connection.setAutoCommit(true);
statement = connection.createStatement();
statement.execute("CREATE TABLE IF NOT EXISTS android_metadata(locale TEXT)");
for (int i = 0; i < sqls.size(); i++) {
statement.execute(sqls.get(i));
}
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (statement != null) {
statement.close();
}
if (connection != null) {
connection.close();
}
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
public static void main(String[] args) {
File file = new File("");
System.out.println(file.getAbsolutePath());
JtSqliteUtils.createClass(file.getAbsolutePath() + "/res/xml/cq.xml", file.getAbsolutePath() + "/src", "com.jingtuo.android.db");
}
}
<?xml version="1.0" encoding="UTF-8"?>
<!ENTITY % datatypes "(TEXT|INTEGER|REAL|BLOB)">
<!ENTITY % constraints "(NOTNULL|NULL|UNIQUE|COLLATE|CHECK)">
<!ELEMENT db ( table+ )>
<!ATTLIST db
name CDATA #REQUIRED
>
<!ELEMENT table ( column+ , primary_key?, foreign_key? )>
<!ATTLIST table
name CDATA #REQUIRED
comment CDATA #IMPLIED
>
<!ELEMENT primary_key EMPTY>
<!ATTLIST primary_key
column CDATA #REQUIRED
>
<!ELEMENT foreign_key EMPTY>
<!ATTLIST primary_key
column CDATA #REQUIRED
>
<!ELEMENT column EMPTY>
<!ATTLIST column
name CDATA #REQUIRED
datatype %datatypes; #REQUIRED
constraint %constraints; #IMPLIED
default CDATA #IMPLIED
comment CDATA #IMPLIED
>
使用手順:
＜1＞DMDファイルを使ってデータベースxmlファイルを生成します.
＜2＞Jt SqlityUtils類のcreateClassを使って実体類を生成する