org.dbtools.codegen.java.JavaClass Maven / Gradle / Ivy
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DBTools ORM Class Generator.
/*
* JavaClass.java
*
* Created on August 11, 2006
*
* Copyright 2006 Jeff Campbell. All rights reserved. Unauthorized reproduction
* is a violation of applicable law. This material contains certain
* confidential or proprietary information and trade secrets of Jeff Campbell.
*/
package org.dbtools.codegen.java;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.PrintStream;
import java.util.ArrayList;
import java.util.List;
/**
* @author Jeff
*/
@SuppressWarnings("PMD.UseStringBufferForStringAppends")
public class JavaClass {
private ClassType classType = ClassType.CLASS;
private static String tab = " ";
private String fileHeaderComment = "";
private String classHeaderComment = "";
private String packageName = "";
private List imports;
private Access access = Access.PUBLIC;
private boolean abstractClass = false;
private boolean staticClass = false;
private boolean finalClass = false;
private List annotations;
private String name;
private List implementsInterfaces;
private String extendsClass;
private String staticInitializerBlock = "";
private List enums;
private List variables;
private List constructors;
private List methods;
// vars for generator
private boolean createDefaultConstructor = true;
public JavaClass(String name) {
this.setName(name);
init();
}
public JavaClass(String packageName, String name) {
this.setName(name);
this.setPackageName(packageName);
init();
}
private void init() {
this.imports = new ArrayList();
this.annotations = new ArrayList();
this.implementsInterfaces = new ArrayList();
this.enums = new ArrayList();
this.variables = new ArrayList();
this.constructors = new ArrayList();
this.methods = new ArrayList();
}
public void setDefaultCVSFileHeaderComment() {
setFileHeaderComment("/*\n");
setFileHeaderComment(getFileHeaderComment() + " * $Author: jeff $\n");
setFileHeaderComment(getFileHeaderComment() + " * $RCSfile$\n");
setFileHeaderComment(getFileHeaderComment() + " * $Revision: 1717 $\n");
setFileHeaderComment(getFileHeaderComment() + " * $Date: 2006-08-01 22:43:52 -0600 (Tue, 01 Aug 2006) $\n");
setFileHeaderComment(getFileHeaderComment() + " */\n\n");
}
public void setDefaultClassHeaderComment(String shortDescription, String copyright, String author, String version, boolean useCVSDate) {
setClassHeaderComment("\n/**\n");
setClassHeaderComment(getClassHeaderComment() + (" * " + shortDescription + "
\n"));
if (useCVSDate) {
setClassHeaderComment(getClassHeaderComment() + " * CVS last modified: $Date: 2006-08-01 22:43:52 -0600 (Tue, 01 Aug 2006) $
\n");
}
setClassHeaderComment(getClassHeaderComment() + (" * " + copyright + "\n"));
setClassHeaderComment(getClassHeaderComment() + " *\n");
setClassHeaderComment(getClassHeaderComment() + (" * @author " + author + "\n"));
setClassHeaderComment(getClassHeaderComment() + (" * @version " + version + "\n"));
setClassHeaderComment(getClassHeaderComment() + " */\n\n");
}
public void addImport(String newImport) {
if (!imports.contains(newImport)) {
imports.add(newImport);
}
}
public void addAnnotation(String annotation) {
if (annotation == null || annotation.length() == 0) {
throw new IllegalArgumentException("annotation cannot be null or empty");
}
if (annotation.charAt(0) != '@') {
annotations.add('@' + annotation);
} else {
annotations.add(annotation);
}
}
public void addImplements(String className) {
if (className == null || className.length() == 0) {
throw new IllegalArgumentException("className for Implements cannot be null or empty");
}
implementsInterfaces.add(className);
}
public JavaInnerEnum addEnum(String enumName, List enumValues) {
return addEnum(new JavaInnerEnum(enumName, enumValues));
}
public JavaInnerEnum addEnum(JavaInnerEnum newEnum) {
if (newEnum == null) {
throw new IllegalArgumentException("newEnum cannot be null");
}
enums.add(newEnum);
return newEnum;
}
public JavaVariable addVariable(JavaVariable newVariable) {
if (newVariable == null) {
throw new IllegalArgumentException("newVariable cannot be null");
}
variables.add(newVariable);
return newVariable;
}
public JavaVariable addVariable(JavaVariable newVariable, boolean generateSetterGetter) {
if (newVariable == null) {
throw new IllegalArgumentException("newVariable cannot be null");
}
newVariable.setGenerateSetterGetter(generateSetterGetter);
return addVariable(newVariable);
}
public JavaVariable addVariable(String datatype, String name) {
JavaVariable newVariable = new JavaVariable(datatype, name);
return addVariable(newVariable);
}
public JavaVariable addVariable(String datatype, String name, String defaultValue) {
JavaVariable newVariable = new JavaVariable(datatype, name);
newVariable.setDefaultValue(defaultValue);
return addVariable(newVariable);
}
public JavaVariable addVariable(String datatype, String name, boolean generateSetterGetter) {
JavaVariable newVariable = new JavaVariable(datatype, name);
newVariable.setGenerateSetterGetter(generateSetterGetter);
return addVariable(newVariable);
}
/**
* Creates a public static final variable in the class.
*/
public JavaVariable addConstant(String datatype, String name, String defaultValue) {
return addConstant(datatype, name, defaultValue, true);
}
public JavaVariable addConstant(String datatype, String name, String defaultValue, boolean formatDefaultValue) {
JavaVariable constant = new JavaVariable(datatype, name);
constant.setAccess(Access.PUBLIC);
constant.setStatic(true);
constant.setFinal(true);
constant.setDefaultValue(defaultValue, formatDefaultValue);
addVariable(constant);
return constant;
}
public JavaMethod addConstructor(Access access, List parameters, String content) {
if (isInterface()) {
throw new IllegalStateException("Cannot add a constructor to an Interface");
}
return addMethod(MethodType.CONSTRUCTOR, access, "", name, parameters, content);
}
public JavaMethod addMethod(JavaMethod newMethod) {
if (newMethod == null) {
throw new IllegalArgumentException("newMethod cannot be null");
}
switch (newMethod.getMethodType()) {
case CONSTRUCTOR:
constructors.add(newMethod);
break;
case STANDARD:
default:
methods.add(newMethod);
break;
}
return newMethod;
}
public JavaMethod addMethod(Access access, String returnType, String name, String content) {
JavaMethod newMethod = new JavaMethod(access, returnType, name);
newMethod.setContent(content);
addMethod(newMethod);
return newMethod;
}
public JavaMethod addMethod(Access access, String returnType, String name, List parameters, String content) {
return addMethod(MethodType.STANDARD, access, returnType, name, parameters, content);
}
private JavaMethod addMethod(MethodType methodType, Access access, String returnType, String name, List parameters, String content) {
JavaMethod newMethod = new JavaMethod(access, returnType, name);
newMethod.setMethodType(methodType);
if (parameters != null) {
newMethod.setParameters(parameters);
}
newMethod.setContent(content);
addMethod(newMethod);
return newMethod;
}
// =================== BUILD METHODS ================
private String buildPackage() {
return "package " + packageName + ";\n\n";
}
private String buildImports() {
if (imports.isEmpty()) {
return "";
} else {
StringBuilder out = new StringBuilder();
for (String newImport : imports) {
out.append("import ").append(newImport).append(";\n");
}
out.append("\n");
return out.toString();
}
}
private String buildClassHeader(String genericsTypeVar) {
StringBuilder classHeader = new StringBuilder();
classHeader.append("\n");
// annotations
for (String annotation : annotations) {
classHeader.append(annotation).append("\n");
}
// generics
String genericsVar = (genericsTypeVar == null ? "" : "<" + genericsTypeVar + ">");
// extends
String extendsNameString = "";
if (getExtends() != null && getExtends().length() > 0) {
extendsNameString = " extends " + getExtends();
}
// implements
String implementsNamesString = "";
if (implementsInterfaces != null && !implementsInterfaces.isEmpty()) {
implementsNamesString = " implements ";
for (int i = 0; i < implementsInterfaces.size(); i++) {
if (i > 0) {
implementsNamesString += ", "; // nopmd - generator
}
implementsNamesString += implementsInterfaces.get(i); // nopmd - generator
}
}
// generate header
classHeader.append(getAccessString(getAccess())).append(" ");
if (isAbstract()) {
classHeader.append("abstract ");
}
if (isStatic()) {
classHeader.append("static ");
}
if (isFinal()) {
classHeader.append("final ");
}
switch (classType) {
case CLASS:
classHeader.append("class ").append(getName()).append(genericsVar);
break;
case INTERFACE:
classHeader.append("interface ").append(getName()).append(genericsVar);
break;
case ENUM:
classHeader.append("enum ").append(getName()).append(genericsVar);
break;
default:
}
classHeader.append(extendsNameString);
classHeader.append(implementsNamesString);
classHeader.append(" {\n");
return classHeader.toString();
}
public static String getAccessString(Access access) {
switch (access) {
case DEFAULT_NONE:
return "";
case PUBLIC:
return "public";
case PRIVATE:
return "private";
case PROTECTED:
return "protected";
default:
throw new IllegalArgumentException("Illegal Access type: " + access.toString());
}
}
public static String getTab() {
return tab;
}
public static void setTab(String newTab) {
tab = newTab;
}
private String buildEnums() {
String enumsText = "";
String TAB = getTab();
for (JavaInnerEnum enumItem : enums) {
enumsText += TAB + enumItem.toString() + "\n";
}
enumsText += "\n";
return enumsText;
}
private String buildVariables() {
String variablesText = "";
for (JavaVariable variable : variables) {
variablesText += variable.toString() + ";\n";
// add setters and getters if needed
addAccessorMethods(variable);
}
variablesText += "\n";
return variablesText;
}
private void addAccessorMethods(JavaVariable variable) {
if (isInterface()) {
// cannot add implementation to a Interface
return;
}
String TAB = getTab();
String type = variable.getDataType();
String varName = variable.getName();
// getter
if (variable.isGenerateGetter()) {
String getterContent;
if (variable.isGetterReturnsClone()) {
getterContent = "if (" + varName + " != null) {\n";
getterContent += TAB + "return (" + variable.getDataType() + ")" + varName + ".clone();\n";
getterContent += "} else {\n";
getterContent += TAB + "return null;\n";
getterContent += "}\n";
} else {
getterContent = "return " + varName + ";\n";
}
JavaMethod getterMethod = addMethod(variable.getGenerateGetterAccess(), type, variable.getGetterMethodName(), getterContent);
getterMethod.setStatic(variable.isStatic());
// JSR305 support
if (variable.isNullable()) {
getterMethod.addAnnotation("@javax.annotation.Nullable");
} else if (variable.isNonnull()) {
getterMethod.addAnnotation("@javax.annotation.Nonnull");
}
}
// setter
if (variable.isGenerateSetter()) {
JavaMethod setterMethod = new JavaMethod(variable.getGenerateSetterAccess(), "void", variable.getSetterMethodName());
JavaVariable parameter = new JavaVariable(type, varName);
// JSR305 support
if (variable.isNullable()) {
parameter.addAnnotation("@javax.annotation.Nullable");
} else if (variable.isNonnull()) {
parameter.addAnnotation("@javax.annotation.Nonnull");
}
setterMethod.addParameter(parameter);
setterMethod.setStatic(variable.isStatic());
String thisText = "this";
if (variable.isStatic()) {
thisText = this.getName();
}
String setterContent = "";
if (type != null && type.equals("String") && variable.isForceStringLength()) {
int strLength = variable.getForcedStringLength();
setterContent += "if (" + varName + "!= null && " + varName + ".length() > " + strLength + ") {\n";
setterContent += TAB + thisText + "." + varName + " = " + varName + ".substring(0," + strLength + ");\n";
setterContent += "} else {\n";
setterContent += TAB + thisText + "." + varName + " = " + varName + ";\n";
setterContent += "}\n";
} else {
if (variable.isSetterClonesParam()) {
setterContent += "if (" + varName + " != null) {\n";
setterContent += TAB + thisText + "." + varName + " = (" + variable.getDataType() + ") " + varName + ".clone();\n";
setterContent += "} else {\n";
setterContent += TAB + thisText + "." + varName + " = null;\n";
setterContent += "}\n";
} else {
setterContent += thisText + "." + varName + " = " + varName + ";";
}
}
String postSetterCode = variable.getPostSetterCode();
if (postSetterCode.length() > 0) {
setterContent += postSetterCode;
}
setterMethod.setContent(setterContent);
addMethod(setterMethod);
}
}
public static String createGetterMethodName(Class type, String varName) {
String methodVarName = varName.substring(0, 1).toUpperCase() + varName.substring(1);
if (type == Boolean.class || type == boolean.class) {
return "is" + methodVarName;
} else {
return "get" + methodVarName;
}
}
public static String createSetterMethodName(String varName) {
String methodVarName = varName.substring(0, 1).toUpperCase() + varName.substring(1);
return "set" + methodVarName;
}
@Override
public String toString() {
StringBuilder out = new StringBuilder();
if (getFileHeaderComment().length() > 0) {
out.append(getFileHeaderComment()).append("\n\n");
}
out.append("\n");
out.append(buildPackage());
out.append(buildImports());
if (getClassHeaderComment().length() > 0) {
out.append(getClassHeaderComment()).append("\n\n");
}
out.append(buildClassHeader(null)); // TODO... get rid of first parameter
out.append(buildPostClassHeader()); // Support for ENUM type
// out.append(constants); // do not need this.... just use variables
out.append(buildEnums());
out.append(buildVariables());
buildStaticInitializer(out);
buildMethods(out);
// end of class
out.append("\n}");
return out.toString();
}
private void buildStaticInitializer(final StringBuilder out) {
if (staticInitializerBlock != null && staticInitializerBlock.length() > 0) {
out.append(getTab()).append("static {\n");
out.append(staticInitializerBlock).append("\n");
out.append(getTab()).append("}\n\n");
}
}
private void buildMethods(final StringBuilder out) {
// constructor methods
if (!isInterface()) {
if (createDefaultConstructor) {
addConstructor(Access.PUBLIC, null, "");
}
for (JavaMethod constructor : constructors) {
out.append(constructor.toString());
out.append("\n");
}
}
// regular methods
for (JavaMethod method : methods) {
out.append(method.toString(isInterface()));
out.append("\n");
}
}
public String getFilename() {
return getName() + ".java";
}
public void writeToDisk(String directoryname) {
writeToDisk(directoryname, true);
}
public void writeToDisk(String directoryname, boolean overwrite) {
File directory = new File(directoryname);
directory.mkdirs();
try {
File outFile = new File(directoryname + "/" + getFilename());
if (!overwrite && outFile.exists()) {
return;
}
PrintStream fps = new PrintStream(new FileOutputStream(outFile));
fps.print(this.toString());
fps.close();
} catch (FileNotFoundException ex) {
ex.printStackTrace();
}
}
public String getPackageName() {
return packageName;
}
public void setPackageName(String packageName) {
this.packageName = packageName;
}
public Access getAccess() {
return access;
}
public void setAccess(Access access) {
this.access = access;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getExtends() {
return extendsClass;
}
public void setExtends(String extendsClass) {
this.extendsClass = extendsClass;
}
public boolean isAbstract() {
return abstractClass;
}
public void setAbstract(boolean abstractClass) {
this.abstractClass = abstractClass;
}
public boolean isStatic() {
return staticClass;
}
public void setStatic(boolean staticClass) {
this.staticClass = staticClass;
}
public boolean isFinal() {
return finalClass;
}
public void setFinal(boolean finalClass) {
this.finalClass = finalClass;
}
public boolean isCreateDefaultConstructor() {
return createDefaultConstructor;
}
public void setCreateDefaultConstructor(boolean createDefaultConstructor) {
this.createDefaultConstructor = createDefaultConstructor;
}
public static String formatConstant(String constant) {
StringBuilder newConst = new StringBuilder();
for (int i = 0; i < constant.length(); i++) {
// add the current character in UPPERCASE
newConst.append(Character.toUpperCase(constant.charAt(i)));
// check for need of _
char current = constant.charAt(i);
char nextChar = ' ';
if ((i + 1) < constant.length()) {
nextChar = constant.charAt(i + 1);
}
if (!Character.isUpperCase(current) && nextChar != ' ' && Character.isUpperCase(nextChar)) {
newConst.append('_');
}
}
return newConst.toString();
}
@SuppressWarnings("PMD.AvoidReassigningParameters")
public static String formatDefaultValue(String fieldType, String defaultValue) {
String newDefaultValue = "";
if (defaultValue == null || defaultValue.equalsIgnoreCase("NULL")) {
defaultValue = null; // nopmd
}
if (fieldType == null) {
return "null";
}
if (fieldType.equals("String")) {
if (defaultValue == null) {
newDefaultValue = "\"\"";
} else {
newDefaultValue = "\"" + defaultValue + "\"";
}
} else if (fieldType.equals("int") || fieldType.equals("long") || fieldType.equals("float") || fieldType.equals("double")) {
if (defaultValue == null || defaultValue.equals("")) {
newDefaultValue = "0";
} else {
newDefaultValue = defaultValue;
}
} else if (fieldType.equals("Integer") || fieldType.equals("Long") || fieldType.equals("Float") || fieldType.equals("Double")) {
if (defaultValue == null || defaultValue.equals("")) {
newDefaultValue = "null";
} else {
newDefaultValue = defaultValue;
}
} else if (fieldType.equals("char") || fieldType.equals("Character")) {
if (defaultValue == null || defaultValue.equals("")) {
newDefaultValue = "''";
} else {
newDefaultValue = "'" + defaultValue + "'";
}
} else if (fieldType.equals("boolean") || fieldType.equals("Boolean")) {
if (defaultValue == null || defaultValue.equals("")) {
newDefaultValue = "false";
} else {
if (defaultValue.equals("1")) {
newDefaultValue = "true";
} else if (defaultValue.equals("0")) {
newDefaultValue = "false";
} else {
newDefaultValue = defaultValue;
}
}
} else if (fieldType.equals("Date") && defaultValue != null && defaultValue.equalsIgnoreCase("NOW")) {
newDefaultValue = "new Date()";
} else if (fieldType.equals("BigInteger")) {
if (defaultValue != null) {
newDefaultValue = "new java.math.BigInteger(\"" + defaultValue + "\")";
} else {
newDefaultValue = "new java.math.BigInteger(\"0\")";
}
} else if (fieldType.equals("BigDecimal")) {
if (defaultValue != null) {
newDefaultValue = "new java.math.BigDecimal(" + defaultValue + ")";
} else {
newDefaultValue = "new java.math.BigDecimal(0)";
}
} else if (defaultValue != null && defaultValue.length() > 0) {
newDefaultValue = defaultValue;
} else {
newDefaultValue = "null";
}
return newDefaultValue;
}
/**
* Determines package name for specified path.
*/
public static String createPackageFromFilePath(String filepath) {
// if source path contains "java" then assume this is the source path (for maven projects)
if (filepath.contains("src/main/java")) {
return createPackageFromFilePath(filepath, "src.main.java");
} else if (filepath.contains("src\\main\\java")) {
return createPackageFromFilePath(filepath, "src.main.java");
}
if (filepath.contains("src/java")) {
return createPackageFromFilePath(filepath, "src.java");
} else if (filepath.contains("src\\java")) {
return createPackageFromFilePath(filepath, "src.java");
} else if (filepath.contains("src")) {
return createPackageFromFilePath(filepath, "src");
} else {//if (filepath.indexOf("source") != -1)
return createPackageFromFilePath(filepath, "source");
}
}
public static String createPackageFromFilePath(String filepath, String srcDirName) {
String dotFilepath = "";
String packageName = "";
if (filepath == null || filepath.equals("")) {
return "";
}
// change / or \\ to .
for (int i = 0; i < filepath.length(); i++) {
char c = filepath.charAt(i);
if (c == '\\' || c == '/') {
dotFilepath += '.';
} else {
dotFilepath += c;
}
}
// find source or src part of directory
int start = dotFilepath.indexOf(srcDirName);
if (start > 0) {
packageName = dotFilepath.substring(start + srcDirName.length());
} else {
packageName = dotFilepath;
}
// on windows... get rid of drive letter and :
if (packageName.length() >= 2 && packageName.charAt(1) == ':') {
packageName = packageName.substring(2);
}
// remove any starting .'s
if (packageName.length() > 0 && packageName.charAt(0) == '.') {
packageName = packageName.substring(1);
}
// remove any leading .'s
if (packageName.length() > 0 && packageName.charAt(packageName.length() - 1) == '.') {
packageName = packageName.substring(0, packageName.length() - 1);
}
return packageName;
}
/**
* Method that makes sure that a string is java bean compliant. Makes
* sure that first letter is lowercase
*
* @param items Incoming String(s)
* @return String that is adjusted to a proper java variable standards
*/
public static String formatToJavaVariable(String... items) {
String formattedName = "";
boolean firstItem = true;
for (String item : items) {
if (firstItem) {
formattedName += item.substring(0, 1).toLowerCase() + item.substring(1);
firstItem = false;
} else {
formattedName += item.substring(0, 1).toUpperCase() + item.substring(1);
}
}
return formattedName;
}
/**
* Method that makes sure that a string is java bean compliant. Makes
* sure that first letter is upper case
*
* @param items Incoming String(s)
* @return String that is adjusted to a proper java variable standards
*/
public static String formatToJavaMethod(String... items) {
String formattedName = "";
boolean firstItem = true;
for (String item : items) {
if (firstItem) {
formattedName += item.substring(0, 1).toLowerCase() + item.substring(1);
firstItem = false;
} else {
formattedName += item.substring(0, 1).toUpperCase() + item.substring(1);
}
}
return formattedName;
}
public String getFileHeaderComment() {
return fileHeaderComment;
}
public void setFileHeaderComment(String fileHeaderComment) {
this.fileHeaderComment = fileHeaderComment;
}
public String getClassHeaderComment() {
return classHeaderComment;
}
public void setClassHeaderComment(String classHeaderComment) {
this.classHeaderComment = classHeaderComment;
}
protected ClassType getClassType() {
return classType;
}
protected void setClassType(ClassType classType) {
this.classType = classType;
}
public boolean isInterface() {
return classType == ClassType.INTERFACE;
}
public boolean isEnum() {
return classType == ClassType.ENUM;
}
protected String buildPostClassHeader() {
return "";
}
public void appendStaticInitializer(String code) {
String TAB = getTab();
staticInitializerBlock += TAB + TAB + code + "\n";
}
public void setStaticInitializer(String code) {
String TAB = getTab();
staticInitializerBlock = TAB + TAB + code + "\n";
}
}