com.google.gwt.validation.rebind.ValidatorCreator Maven / Gradle / Ivy
/*
* Copyright 2010 Google Inc.
*
* Licensed 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.google.gwt.validation.rebind;
import com.google.gwt.core.client.GWT;
import com.google.gwt.core.ext.GeneratorContext;
import com.google.gwt.core.ext.TreeLogger;
import com.google.gwt.core.ext.UnableToCompleteException;
import com.google.gwt.core.ext.typeinfo.JClassType;
import com.google.gwt.thirdparty.guava.common.collect.ImmutableList;
import com.google.gwt.thirdparty.guava.common.collect.Lists;
import com.google.gwt.user.rebind.ClassSourceFileComposerFactory;
import com.google.gwt.user.rebind.SourceWriter;
import com.google.gwt.validation.client.GwtValidation;
import com.google.gwt.validation.client.impl.AbstractGwtValidator;
import com.google.gwt.validation.client.impl.GwtBeanDescriptor;
import com.google.gwt.validation.client.impl.GwtSpecificValidator;
import com.google.gwt.validation.client.impl.GwtValidationContext;
import java.util.List;
import java.util.Set;
import javax.validation.ConstraintViolation;
import javax.validation.metadata.BeanDescriptor;
/**
* EXPERIMENTAL and subject to change. Do not use this in
* production code.
*
* Class that creates the validator for the given input class.
*/
public class ValidatorCreator extends AbstractCreator {
/**
* The beans to validate in source declaration order.
*/
private final ImmutableList beansToValidate;
private final GwtValidation gwtValidation;
public ValidatorCreator(JClassType validatorType, //
GwtValidation gwtValidation, //
TreeLogger logger, //
GeneratorContext context) throws UnableToCompleteException {
super(context, logger, validatorType);
this.gwtValidation = gwtValidation;
List temp = Lists.newArrayList();
for (Class clazz : gwtValidation.value()) {
BeanHelper helper = createBeanHelper(clazz);
temp.add(helper);
}
beansToValidate = Util.sortMostSpecificFirst(temp, BeanHelper.TO_CLAZZ);
}
@Override
protected void compose(ClassSourceFileComposerFactory composerFactory) {
addImports(composerFactory,
GWT.class,
GwtBeanDescriptor.class,
GwtSpecificValidator.class,
GwtValidationContext.class,
Set.class,
ConstraintViolation.class,
BeanDescriptor.class);
composerFactory.setSuperclass(AbstractGwtValidator.class.getCanonicalName());
composerFactory.addImplementedInterface(this.validatorType.getQualifiedSourceName());
}
@Override
protected void writeClassBody(SourceWriter sourceWriter) {
writeConstructor(sourceWriter);
sourceWriter.println();
writeValidate(sourceWriter);
sourceWriter.println();
writeValidateProperty(sourceWriter);
sourceWriter.println();
writeValidateValue(sourceWriter);
sourceWriter.println();
writeGetConstraintsForClass(sourceWriter);
sourceWriter.println();
writeGwtValidate(sourceWriter);
}
private String getSimpleName() {
return validatorType.getSimpleSourceName() + "Impl";
}
private void writeConstructor(SourceWriter sw) {
// public MyValidator() {
sw.println("public " + getSimpleName() + "() {");
sw.indent();
// super( <>);
sw.print("super(");
boolean first = true;
for (Class group : gwtValidation.groups()) {
if (!first) {
sw.print(", ");
} else {
first = false;
}
sw.print(group.getCanonicalName() + ".class");
}
sw.println(");");
sw.outdent();
sw.println("}");
}
private void writeContext(SourceWriter sw, BeanHelper bean, String objectName) {
// GwtValidationContext context = new GwtValidationContext(
sw.print(GwtValidationContext.class.getSimpleName());
sw.print(" context = new ");
sw.print(GwtValidationContext.class.getSimpleName());
sw.println("(");
sw.indent();
sw.indent();
// (Class) MyBean.class,
sw.print("(Class) ");
sw.println(bean.getTypeCanonicalName() + ".class, ");
// object,
sw.println(objectName + ", ");
// MyBeanValidator.INSTANCE.getConstraints(),
sw.print(bean.getFullyQualifiedValidatorName());
sw.println(".INSTANCE.getConstraints(), ");
// getMessageInterpolator(),
sw.println("getMessageInterpolator(), ");
// this);
sw.println("this);");
sw.outdent();
sw.outdent();
}
private void writeGetConstraintsForClass(SourceWriter sw) {
// public BeanDescriptor getConstraintsForClass(Class clazz {
sw.println("public BeanDescriptor getConstraintsForClass(Class clazz) {");
sw.indent();
// checkNotNull(clazz, "clazz");
sw.println("checkNotNull(clazz, \"clazz\");");
for (BeanHelper bean : beansToValidate) {
writeGetConstraintsForClass(sw, bean);
}
writeThrowIllegalArgumnet(sw, "clazz.getName()");
// }
sw.outdent();
sw.println("}");
}
private void writeGetConstraintsForClass(SourceWriter sw,
BeanHelper bean) {
// if (clazz.eqals(MyBean.class)) {
sw.println("if (clazz.equals(" + bean.getTypeCanonicalName() + ".class)) {");
sw.indent();
// return MyBeanValidator.INSTANCE.getConstraints();
sw.print("return ");
sw.print(bean.getFullyQualifiedValidatorName());
sw.println(".INSTANCE.getConstraints();");
// }
sw.outdent();
sw.println("}");
}
private void writeGwtValidate(SourceWriter sw) {
// public Set> validate(GwtValidationContext
// context,
sw.print("public Set> ");
sw.println("validate(GwtValidationContext context,");
sw.indent();
sw.indent();
// Object object, Class... groups) {
sw.println("Object object, Class... groups) {");
sw.outdent();
sw.println("checkNotNull(context, \"context\");");
sw.println("checkNotNull(object, \"object\");");
sw.println("checkNotNull(groups, \"groups\");");
sw.println("checkGroups(groups);");
for (BeanHelper bean : Util.sortMostSpecificFirst(
BeanHelper.getBeanHelpers().values(), BeanHelper.TO_CLAZZ)) {
writeGwtValidate(sw, bean);
}
// TODO(nchalko) log warning instead.
writeThrowIllegalArgumnet(sw, "object.getClass().getName()");
sw.outdent();
sw.println("}");
}
private void writeGwtValidate(SourceWriter sw, BeanHelper bean) {
writeIfInstanceofBeanType(sw, bean);
sw.indent();
// return PersonValidator.INSTANCE
sw.print("return ");
sw.println(bean.getFullyQualifiedValidatorName() + ".INSTANCE");
sw.indent();
sw.indent();
// .validate(context, (<>) object, groups);
sw.print(".validate(context, ");
sw.print("(" + bean.getTypeCanonicalName() + ") object, ");
sw.println("groups);");
sw.outdent();
sw.outdent();
// }
sw.outdent();
sw.println("}");
}
private void writeIfInstanceofBeanType(SourceWriter sourceWriter, BeanHelper bean) {
// if (object instanceof MyBean) {
sourceWriter.print("if (object instanceof ");
sourceWriter.print(bean.getTypeCanonicalName());
sourceWriter.println(") {");
}
private void writeThrowIllegalArgumnet(SourceWriter sourceWriter,
String getClassName) {
// throw new IllegalArgumentException("MyValidator can not validate ",
sourceWriter.print("throw new IllegalArgumentException(\"");
sourceWriter.print(this.validatorType.getName() + " can not validate \"");
sourceWriter.indent();
sourceWriter.indent();
// + object.getClass().getName() +". "
sourceWriter.print("+ ");
sourceWriter.print(getClassName);
sourceWriter.println("+ \". \"");
// + "Valid values are {Foo.clas, Bar.class}
sourceWriter.print("+ \"Valid types are ");
sourceWriter.print(beansToValidate.toString());
sourceWriter.println("\");");
sourceWriter.outdent();
sourceWriter.outdent();
}
private void writeValidate(SourceWriter sw) {
// public Set> validate(T object, Class...
// groups) {
sw.println("public Set> validate(T object, Class... groups) {");
sw.indent();
sw.println("checkNotNull(object, \"object\");");
sw.println("checkNotNull(groups, \"groups\");");
sw.println("checkGroups(groups);");
for (BeanHelper bean : beansToValidate) {
writeValidate(sw, bean);
}
writeThrowIllegalArgumnet(sw, "object.getClass().getName()");
sw.outdent();
sw.println("}");
}
private void writeValidate(SourceWriter sw, BeanHelper bean) {
writeIfInstanceofBeanType(sw, bean);
sw.indent();
writeContext(sw, bean, "object");
// return PersonValidator.INSTANCE
sw.print("return ");
sw.println(bean.getFullyQualifiedValidatorName() + ".INSTANCE");
sw.indent();
sw.indent();
// .validate(context, (<>) object, groups);
sw.print(".validate(context, ");
sw.print("(" + bean.getTypeCanonicalName() + ") object, ");
sw.println("groups);");
sw.outdent();
sw.outdent();
// }
sw.outdent();
sw.println("}");
}
private void writeValidateProperty(SourceWriter sw) {
sw.println("public Set> validateProperty(T object,String propertyName, Class... groups) {");
sw.indent();
sw.println("checkNotNull(object, \"object\");");
sw.println("checkNotNull(propertyName, \"propertyName\");");
sw.println("checkNotNull(groups, \"groups\");");
sw.println("checkGroups(groups);");
for (BeanHelper bean : beansToValidate) {
writeValidateProperty(sw, bean);
}
writeThrowIllegalArgumnet(sw, "object.getClass().getName()");
sw.outdent();
sw.println("}");
}
private void writeValidateProperty(SourceWriter sw, BeanHelper bean) {
writeIfInstanceofBeanType(sw, bean);
sw.indent();
writeContext(sw, bean, "object");
// return PersonValidator.INSTANCE
sw.print("return ");
sw.println(bean.getFullyQualifiedValidatorName() + ".INSTANCE");
sw.indent();
sw.indent();
// .validateProperty(context, (MyBean) object, propertyName, groups);
sw.print(".validateProperty(context, (");
sw.print(bean.getTypeCanonicalName());
sw.print(") object, propertyName, ");
sw.println("groups);");
sw.outdent();
sw.outdent();
// }
sw.outdent();
sw.println("}");
}
private void writeValidateValue(SourceWriter sw) {
sw.println("public Set> validateValue(Class beanType, String propertyName, Object value, Class... groups) {");
sw.indent();
sw.println("checkNotNull(beanType, \"beanType\");");
sw.println("checkNotNull(propertyName, \"propertyName\");");
sw.println("checkNotNull(groups, \"groups\");");
sw.println("checkGroups(groups);");
for (BeanHelper bean : beansToValidate) {
writeValidateValue(sw, bean);
}
writeThrowIllegalArgumnet(sw, "beanType.getName()");
sw.outdent();
sw.println("}");
}
private void writeValidateValue(SourceWriter sw, BeanHelper bean) {
sw.println("if (beanType.equals(" + bean.getTypeCanonicalName()
+ ".class)) {");
sw.indent();
writeContext(sw, bean, "null");
// return PersonValidator.INSTANCE
sw.print("return ");
sw.println(bean.getFullyQualifiedValidatorName() + ".INSTANCE");
sw.indent();
sw.indent();
// .validateValue(context, (Class beanType, propertyName, value,
// groups);
sw.print(".validateValue(context, (Class<");
sw.print(bean.getTypeCanonicalName());
sw.println(">)beanType, propertyName, value, groups);");
sw.outdent();
sw.outdent();
// }
sw.outdent();
sw.println("}");
}
}