com.bigfatgun.fixjures.proxy.AbstractObjectProxy.java Source code

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Here is the source code for com.bigfatgun.fixjures.proxy.AbstractObjectProxy.java

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/*
 * Copyright (c) 2010 Steve Reed
 *
 * 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.bigfatgun.fixjures.proxy;

import com.bigfatgun.fixjures.Fixjure;
import static com.bigfatgun.fixjures.FixtureException.convert;
import com.bigfatgun.fixjures.FixtureType;
import com.bigfatgun.fixjures.TypeWrapper;
import static com.google.common.base.Preconditions.checkNotNull;
import com.google.common.base.Supplier;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.Maps;
import com.google.common.collect.Sets;

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

/**
 * Base proxy class that holds on to stubs and the object type.
 *
 * @author Steve Reed
 */
abstract class AbstractObjectProxy<T> implements ObjectProxy<T> {

    private final Class<T> clazz;
    private final Map<String, Supplier<?>> stubs;
    private final Set<Fixjure.Option> options;

    protected AbstractObjectProxy(final Class<T> cls, final Set<Fixjure.Option> options) {
        this.clazz = checkNotNull(cls);
        this.stubs = Maps.newHashMap();
        this.options = Sets.newEnumSet(options, Fixjure.Option.class);
    }

    public final Class<T> getType() {
        return clazz;
    }

    public final FixtureType suggestType(final String key) {
        if (key == null) {
            return null;
        }

        final Method getter;
        try {
            getter = getType().getMethod(key);
            return TypeWrapper.wrapMethodReturnType(getter);
        } catch (NoSuchMethodException e) {
            if (isOptionEnabled(Fixjure.Option.SKIP_UNMAPPABLE)) {
                return null;
            } else {
                throw convert(e);
            }
        }
    }

    protected boolean isOptionEnabled(final Fixjure.Option option) {
        return options.contains(option);
    }

    /**
     * Returns an immutable map of getter name to value stub.
     *
     * @return an immutable map of getter name to value stub
     */
    protected final ImmutableMap<String, Supplier<?>> getStubs() {
        return ImmutableMap.copyOf(stubs);
    }

    /**
     * Adds a value stub for a method with the given name.
     *
     * @param methodName method name
     * @param valueStub method return value stub
     */
    public final void addValueStub(final String methodName, final Supplier<?> valueStub) {
        stubs.put(methodName, valueStub);
    }
}