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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 org.apache.ibatis.ognl;
import org.apache.ibatis.ognl.enhance.ExpressionCompiler;
import org.apache.ibatis.ognl.enhance.UnsupportedCompilationException;
import java.lang.reflect.Method;
import java.util.Objects;
public class ASTStaticMethod extends SimpleNode implements NodeType {
private static final long serialVersionUID = -116222026971367049L;
private String className;
private String methodName;
private Class getterClass;
public ASTStaticMethod(int id) {
super(id);
}
public ASTStaticMethod(OgnlParser p, int id) {
super(p, id);
}
/**
* Called from parser action.
*/
void init(String className, String methodName) {
this.className = className;
this.methodName = methodName;
}
protected Object getValueBody(OgnlContext context, Object source)
throws OgnlException {
Object[] args = new Object[jjtGetNumChildren()];
Object root = context.getRoot();
for (int i = 0, icount = args.length; i < icount; ++i) {
args[i] = children[i].getValue(context, root);
}
return OgnlRuntime.callStaticMethod(context, className, methodName, args);
}
public Class getGetterClass() {
return getterClass;
}
public Class getSetterClass() {
return getterClass;
}
public String toString() {
StringBuilder result = new StringBuilder("@" + className + "@" + methodName);
result.append("(");
if ((children != null) && (children.length > 0)) {
for (int i = 0; i < children.length; i++) {
if (i > 0) {
result.append(", ");
}
result.append(children[i]);
}
}
result.append(")");
return result.toString();
}
public String toGetSourceString(OgnlContext context, Object target) {
StringBuilder result = new StringBuilder(className + "#" + methodName + "(");
try {
Class clazz = OgnlRuntime.classForName(context, className);
Method m = OgnlRuntime.getMethod(context, clazz, methodName, children, true);
if (m == null) {
throw new UnsupportedCompilationException("Unable to find class/method combo " + className + " / " + methodName);
}
if (!context.getMemberAccess().isAccessible(context, clazz, m, methodName)) {
throw new UnsupportedCompilationException("Method is not accessible, check your jvm runtime security settings. " +
"For static class method " + className + " / " + methodName);
}
if ((children != null) && (children.length > 0)) {
Class[] parms = m.getParameterTypes();
for (int i = 0; i < children.length; i++) {
if (i > 0) {
result.append(", ");
}
Class prevType = context.getCurrentType();
Object value = children[i].getValue(context, context.getRoot());
String parmString = children[i].toGetSourceString(context, context.getRoot());
if (parmString == null || parmString.trim().length() < 1)
parmString = "null";
// to undo type setting of constants when used as method parameters
if (children[i] instanceof ASTConst) {
context.setCurrentType(prevType);
}
parmString = ExpressionCompiler.getRootExpression(children[i], context.getRoot(), context) + parmString;
String cast = "";
if (ExpressionCompiler.shouldCast(children[i])) {
cast = (String) context.remove(ExpressionCompiler.PRE_CAST);
}
if (cast == null)
cast = "";
if (!(children[i] instanceof ASTConst))
parmString = cast + parmString;
Class valueClass = value != null ? value.getClass() : null;
if (NodeType.class.isAssignableFrom(children[i].getClass()))
valueClass = ((NodeType) children[i]).getGetterClass();
if (valueClass != parms[i]) {
if (parms[i].isArray()) {
parmString = OgnlRuntime.getCompiler()
.createLocalReference(context,
"(" + ExpressionCompiler.getCastString(parms[i])
+ ")org.apache.ibatis.ognl.OgnlOps.toArray(" + parmString + ", " + parms[i].getComponentType().getName()
+ ".class, true)",
parms[i]
);
} else if (parms[i].isPrimitive()) {
Class wrapClass = OgnlRuntime.getPrimitiveWrapperClass(parms[i]);
parmString = OgnlRuntime.getCompiler().createLocalReference(context,
"((" + wrapClass.getName()
+ ")org.apache.ibatis.ognl.OgnlOps.convertValue(" + parmString + ","
+ wrapClass.getName() + ".class, true))."
+ OgnlRuntime.getNumericValueGetter(wrapClass),
parms[i]
);
} else if (parms[i] != Object.class) {
parmString = OgnlRuntime.getCompiler()
.createLocalReference(context,
"(" + parms[i].getName() + ")org.apache.ibatis.ognl.OgnlOps.convertValue(" + parmString + "," + parms[i].getName() + ".class)",
parms[i]
);
} else if ((children[i] instanceof NodeType
&& ((NodeType) children[i]).getGetterClass() != null
&& Number.class.isAssignableFrom(((NodeType) children[i]).getGetterClass()))
|| Objects.requireNonNull(valueClass).isPrimitive()) {
parmString = " ($w) " + parmString;
}
}
result.append(parmString);
}
}
result.append(")");
try {
Object contextObj = getValueBody(context, target);
context.setCurrentObject(contextObj);
} catch (Throwable t) {
// ignore
}
getterClass = m.getReturnType();
context.setCurrentType(m.getReturnType());
context.setCurrentAccessor(OgnlRuntime.getCompiler().getSuperOrInterfaceClass(m, m.getDeclaringClass()));
} catch (Throwable t) {
throw OgnlOps.castToRuntime(t);
}
return result.toString();
}
public String toSetSourceString(OgnlContext context, Object target) {
return toGetSourceString(context, target);
}
}