package org.apache.commons.ognl;

/*
 * 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.
 */

import java.lang.reflect.Method;
import java.util.List;
import java.util.Map;

/**
 * Implementation of PropertyAccessor that uses reflection on the target object's class to find a field or a pair of
 * set/get methods with the given property name.
 */
public class ObjectMethodAccessor
    implements MethodAccessor
{

    /**
     * {@inheritDoc}
     */
    public Object callStaticMethod( Map<String, Object> context, Class<?> targetClass, String methodName,
                                    Object[] args )
        throws MethodFailedException
    {
        List<Method> methods = OgnlRuntime.getMethods( targetClass, methodName, true );

        return OgnlRuntime.callAppropriateMethod( (OgnlContext) context, targetClass, null, methodName, null, methods,
                                                  args );
    }

    /**
     * {@inheritDoc}
     */
    public Object callMethod( Map<String, Object> context, Object target, String methodName, Object[] args )
        throws MethodFailedException
    {
        Class<?> targetClass = ( target == null ) ? null : target.getClass();
        List<Method> methods = OgnlRuntime.getMethods( targetClass, methodName, false );

        if ( ( methods == null ) || ( methods.size() == 0 ) )
        {
            methods = OgnlRuntime.getMethods( targetClass, methodName, true );

        }

        return OgnlRuntime.callAppropriateMethod( (OgnlContext) context, target, target, methodName, null, methods,
                                                  args );
    }
}

package org.apache.commons.ognl;

/*
 * 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.
 */

import java.lang.reflect.Method;
import java.util.List;
import java.util.Map;

/**
 * Implementation of PropertyAccessor that uses reflection on the target object's class to find a field or a pair of
 * set/get methods with the given property name.
 */
public class ObjectMethodAccessor
    implements MethodAccessor
{

    /**
     * {@inheritDoc}
     */
    public Object callStaticMethod( Map<String, Object> context, Class<?> targetClass, String methodName,
                                    Object[] args )
        throws MethodFailedException
    {
        List<Method> methods = OgnlRuntime.getMethods( targetClass, methodName, true );

        return OgnlRuntime.callAppropriateMethod( (OgnlContext) context, targetClass, null, methodName, null, methods,
                                                  args );
    }

    /**
     * {@inheritDoc}
     */
    public Object callMethod( Map<String, Object> context, Object target, String methodName, Object[] args )
        throws MethodFailedException
    {
        Class<?> targetClass = ( target == null ) ? null : target.getClass();
        List<Method> methods = OgnlRuntime.getMethods( targetClass, methodName, false );

        if ( ( methods == null ) || ( methods.isEmpty() ) )
        {
            methods = OgnlRuntime.getMethods( targetClass, methodName, true );

        }

        return OgnlRuntime.callAppropriateMethod( (OgnlContext) context, target, target, methodName, null, methods,
                                                  args );
    }
}

Use isEmpty().