io.starter.ignite.generator.DBGen Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of stackgen Show documentation
Show all versions of stackgen Show documentation
Starter StackGen CORE Service Generator
package io.starter.ignite.generator;
import java.io.File;
import java.io.IOException;
import java.lang.reflect.Field;
import java.net.URL;
import java.net.URLClassLoader;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.squareup.javapoet.FieldSpec;
import com.squareup.javapoet.MethodSpec;
import io.starter.ignite.generator.DMLgenerator.Table;
import io.starter.ignite.model.DataField;
import io.starter.ignite.security.dao.ConnectionFactory;
import io.starter.ignite.security.securefield.SecureField;
import io.swagger.annotations.ApiModelProperty;
/**
* responsible for generating DB DML and creating RDB
*
* @author John McMahon (@TechnoCharms)
*
*/
public class DBGen extends Gen implements Generator {
protected static final Logger logger = LoggerFactory.getLogger(DBGen.class);
public void init() throws SQLException, IOException {
logger.info("Generating DB...");
logger.info("Create DB Connection...");
Connection conn = ConnectionFactory.getConnection();
logger.info((conn.isValid(DB_TIMEOUT) ? "OK!" : "FAILED!"));
}
/**
* given a Class, iterate the heriarchy and create a set of DB tables
*
* @param c
* @throws Exception
*/
public static void createTableFromClass(Class c, DBGen gen) throws Exception {
Map classesToGenerate = gen
.processClasses(c, null, gen);
if (classesToGenerate == null) {
throw new RuntimeException("DBGen did not generate any classes.");
}
}
@Override
public Object createSetter(Field f) {
// TODO:
return null;
}
@Override
public Object createAccessor(Field f) {
// TODO:
return null;
}
@Override
public Object createMember(Field f) {
String colName = decamelize(f.getName());
Class colType = f.getType();
String colTypeName = colType.getName();
int pos = colTypeName.lastIndexOf(".") + 1;
if (pos > 0) {
colTypeName = colTypeName.substring(pos);
}
colTypeName = colTypeName.replace(";", "");
// get the annotation
// handle special built-in columns
if (colName.equalsIgnoreCase("ID"))
colTypeName = "Integer.fkid";
else if (colName.equalsIgnoreCase("CREATED_DATE"))
colTypeName = "Timestamp.createdDate";
else if (colName.equalsIgnoreCase("MODIFIED_DATE"))
colTypeName = "Timestamp.modifiedDate";
String dml = Table.myMap.get(colTypeName);
if (colTypeName.contains("Enum")) {
dml = Table.myMap.get("Enum");
}
if (dml == null && f.getType().isPrimitive()) {
dml = Table.myMap.get("String");
} else if (dml == null) {
// TODO: handle complex data types
logger.info("Could not map: " + f.getType().getName()
+ " of coltype: " + colTypeName + " to a Database Column");
return null;
}
dml = configureDML(f, dml, false);
return colName + " " + dml;
}
/**
* configure DML for column
*
* @param f
* @param dml
* @return
*/
private String configureDML(Field f, String dml, boolean rerun) {
String notes = "";// "COMMENT 'ignite generated column for the "
// + f.getName()
// + " value'";
boolean nullable = true;
int leng = 256;
// ${CHAR_SET} ${DEFAULT}
String defaultval = "";
String charset = ""; // "'utf8'";
int minleng = 0;
double minVal = 0d;
double maxVal = Double.MAX_VALUE;
boolean isSecure = false;
boolean isDataField = false;
SecureField sanno = null;
try {
sanno = Gen.getSecureFieldAnnotation(f);
isSecure = sanno != null && sanno.enabled();
} catch (NoSuchMethodException nsme) {
// normal, no SecureField
} catch (SecurityException e) {
logger.warn("Problem getting SecureField Annotation on: "
+ f.getName() + " " + e.toString());
e.printStackTrace();
}
DataField danno = null;
try {
danno = Gen.getDataFieldAnnotation(f);
isDataField = danno != null; // danno.annotationType();
} catch (NoSuchMethodException nsme) {
// normal, no SecureField
} catch (SecurityException e) {
logger.warn("Problem getting DataField Annotation on: "
+ f.getName() + " " + e.toString());
e.printStackTrace();
}
ApiModelProperty anno = null;
try {
anno = Gen.getApiModelPropertyAnnotation(f);
} catch (NoSuchMethodException nsme) {
// normal, no getter
} catch (SecurityException e) {
logger.warn("Problem getting Annotation on: " + f.getName() + " "
+ e.toString());
e.printStackTrace();
}
if (anno != null) {
notes = (anno.notes().equals("") ? notes : anno.notes());
nullable = anno.required();
leng = anno.maxLength();
// TODO: implement other configs
minleng = anno.minLength();
minVal = anno.minValue();
maxVal = anno.maxValue();
}
logger.info(" notes: " + notes);
if (notes != null && !"".equals(notes)) {
notes = "COMMENT '" + notes + "'";
}
dml = dml.replace("${COMMENT}", notes);
logger.info(" nullable: " + nullable);
dml = dml.replace("${NOT_NULL}", (nullable ? "" : "NOT NULL"));
logger.info(" charset: " + charset);
dml = dml.replace("${CHAR_SET}", charset);
logger.info(" defaultVal: " + defaultval);
dml = dml.replace("${DEFAULT}", defaultval);
// TODO: implement a smarter way to handle crypto expansion
if (isSecure) // give extra room for ciphertext bytes
leng *= DB_ENCRYPTED_COLUMN_MULTIPLIER;
// Column length too big for column 'NAME' (max = 65535);
// use BLOB or TEXT instead
if (leng > 1280 && !rerun) {
dml = configureDML(f, Table.myMap.get("Text"), true);
} else {
dml = dml.replace("${MAX_LENGTH}", (leng > 0 ? leng + "" : ""));
}
return dml;
}
static Connection conn = null;
@SuppressWarnings("deprecation")
@Override
/**
* generate DB table from classfile
*/
public synchronized void generate(String className, List fieldList, List getters, List setters) throws Exception {
// String packageName = null;
int dotpos = className.lastIndexOf(".");
if (dotpos < 0 || dotpos >= className.length()) // skip
return;
// packageName = className.substring(0, dotpos);
// packageName = "gen." + packageName;
className = className.substring(dotpos + 1);
// collect the COLUMNs and add to Table then generate
String tableDML = Table.generateTableBeginningDML(className);
Iterator cols = fieldList.iterator();
boolean isEmpty = true;
String extraColumnDML = "";
while (cols.hasNext()) {
isEmpty = false;
Object o = cols.next();
tableDML += " " + o.toString();
// add the PK for auto-increment ID
String colName = o.toString();
colName = colName.substring(0, colName.indexOf(" "));
if (colName.equalsIgnoreCase("id")) {
extraColumnDML += Configuration.LINE_FEED
+ Table.myMap.get("pkid");
}
tableDML += ",";
tableDML += Configuration.LINE_FEED;
}
// indexes
tableDML += extraColumnDML;
if (!isEmpty) {
tableDML = tableDML.substring(0, tableDML.lastIndexOf(","));
tableDML += Configuration.LINE_FEED;
} else {
return;
}
tableDML += Table.CREATE_TABLE_END_BLOCK;
if (conn == null) {
conn = ConnectionFactory.getDataSource().getConnection();
}
PreparedStatement ps = conn.prepareStatement(tableDML);
List triedList = new ArrayList();
// log the DML for troubleshooting
if (Configuration.debug) {
// FileUtils.writeStringToFile(new File("IgniteDML.sql"),
// tableDML
// + Configuration.LINE_FEED, true);
}
try {
ps.execute();
ps.close();
logger.info("SUCCESS: creating table for: " + className);
} catch (Exception e) {
if (e.toString().contains("already exists") && dbGenDropTable) {
logger.info("Table for: " + className + " already exists.");
if (!triedList.contains(className) && dbGenDropTable) {
if (renameTable(className, triedList)) {
// try again
generate("." + className, fieldList, getters, setters);
migrateData(className);
}
} else {
logger.warn("Skipping Retry of Table Creation for: "
+ className);
}
} else {
logger.error("Failed to execute DML for: " + className + " -- "
+ ConnectionFactory.toConfigString()
+ Configuration.LINE_FEED + e.getMessage()
+ Configuration.LINE_FEED + tableDML);
}
}
}
/**
* TODO: implement data migration
* @param className
*/
private void migrateData(String className) {
// TODO Auto-generated method stub
}
/**
* apply the generated DML to create the necessary IDX tables
*
* @param tl
* @return
* @throws SQLException
*/
public static boolean createIDXTables(List tl) throws SQLException {
if (!skipDbGen) {
for (MyBatisJoin j : tl) {
String tableName = j.myTable;
logger.info("Creating IDX TABLE: " + tableName);
// generate the table
if (conn == null) {
conn = ConnectionFactory.getDataSource().getConnection();
}
PreparedStatement psx = conn.prepareStatement(j.getDML());
try {
psx.execute();
psx.close();
} catch (Exception ex) {
logger.error("Failed to createIDXTable table with DML: "
+ ex.toString());
return false;
}
}
}
return true;
}
private boolean renameTable(String className, List triedList) throws SQLException {
if (!skipDbGen) {
logger.info("RENAMING TABLE: " + className);
triedList.add(className);
// rename the table
String renameTableDML = Table.generateTableRenameDML(className);
if (conn == null) {
conn = ConnectionFactory.getDataSource().getConnection();
}
PreparedStatement psx = conn.prepareStatement(renameTableDML);
try {
psx.execute();
psx.close();
} catch (Exception ex) {
logger.error("Failed to drop table with DML: " + renameTableDML
+ " : " + ex.toString());
return false;
}
}
return true;
}
@Override
public String toString() {
return "DB Generator";
}
/**
* iterate the Model folder and generate DML & tables
*
* @throws Exception
*/
static void createDatabaseTablesFromModelFolder() throws Exception {
logger.info("Iterate Swagger Entities and create Tables...");
File[] modelFiles = Gen
.getJavaFiles(JAVA_GEN_SRC_FOLDER + "/" + MODEL_PACKAGE_DIR, false);
DBGen gen = new DBGen();
// classes, this should point to the top of the package
// structure!
URL packagedir = new File(JAVA_GEN_SRC_FOLDER).toURI().toURL();
URLClassLoader classLoader = new URLClassLoader(
new URL[] { packagedir });
logger.info("Created Classloader: " + classLoader);
for (File mf : modelFiles) {
String cn = mf.getName().substring(0, mf.getName().indexOf("."));
// cn = cn + ".class";
cn = IGNITE_MODEL_PACKAGE + "." + cn;
logger.info("Loading Classes from ModelFile: " + cn);
// TODO: fails in web runner
Class loadedClass = classLoader.loadClass(cn);
createTableFromClass(loadedClass, gen);
}
classLoader.close();
}
/**
* converts java member naming convention
* to underscored DB-style naming convention
*
* ie: take upperCamelCase and turn into upper_camel_case
*/
public static String decamelize(String name) {
if (name.equals(name.toLowerCase())
|| name.equals(name.toUpperCase())) { // case insensitive
return name;
}
StringBuilder sb = new StringBuilder();
int x = 0;
for (char c : name.toCharArray()) {
if (Character.isUpperCase(c)) {
sb.append('_');
sb.append(c);
} else {
if (c != '_')
sb.append(c);
}
x++;
}
String ret = sb.toString();
if (columnsUpperCase) {
ret = ret.toUpperCase();
} else {
ret = ret.toLowerCase();
}
return ret;
}
/**
* converts underscored DB-style naming
* convention to java member naming convention
*
* ie: take upper_camel_case and turn into upperCamelCase
*/
public static String camelize(String in) {
if (in == null)
return null;
StringBuilder sb = new StringBuilder();
boolean capitalizeNext = false;
for (char c : in.toCharArray()) {
if (c == '_') {
capitalizeNext = true;
} else {
if (capitalizeNext) {
sb.append(Character.toUpperCase(c));
capitalizeNext = false;
} else {
sb.append(c);
}
}
}
return sb.toString();
}
}
© 2015 - 2024 Weber Informatics LLC | Privacy Policy