com.github.andyshaox.servlet.mapping.annotation.Mappings Maven / Gradle / Ivy

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package com.github.andyshaox.servlet.mapping.annotation;

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

import com.github.andyshao.lang.StringOperation;

/**
 * 
 * Title:

 * Descript:

 * Copyright: Copryright(c) Dec 27, 2015

 * Encoding:UNIX UTF-8
 * 
 * @author Andy.Shao
 *
 */
public final class Mappings {
    private static final String[] EMPTY_STR_ARRAY = new String[] { "" };
    private static final String VALUE_SPLIT = "=";

    public static final boolean constain(Class clazz) {
        return clazz.getAnnotation(Mapping.class) != null;
    }

    public static final boolean constain(Method method) {
        return method.getAnnotation(Mapping.class) != null;
    }

    public static final com.github.andyshaox.servlet.mapping.Mapping convertByMethod(Method method) {
        Mapping mapping = method.getAnnotation(Mapping.class);
        if (mapping == null) return null;

        com.github.andyshaox.servlet.mapping.Mapping result = com.github.andyshaox.servlet.mapping.Mapping.defaultMapping();
        result.setConsumes(mapping.consumes().isEmpty() ? null : mapping.consumes());
        Mappings.format(mapping.headers() , result.getHeaders());
        result.setMethodType(Arrays.deepEquals(mapping.methodType() , Mappings.EMPTY_STR_ARRAY) ? null : mapping.methodType());
        Mappings.format(mapping.attributes() , result.getAttributes());
        result.setProduces(mapping.produces().isEmpty() ? null : mapping.produces());
        result.setUrl(mapping.value());
        result.setDefineClass(method.getDeclaringClass());
        result.setProcessMethod(method);
        result.setClass(false);
        return result;
    }

    public static final com.github.andyshaox.servlet.mapping.Mapping covertByType(Class clazz) {
        Mapping mapping = clazz.getAnnotation(Mapping.class);
        if (mapping == null) return null;

        com.github.andyshaox.servlet.mapping.Mapping result = com.github.andyshaox.servlet.mapping.Mapping.defaultMapping();
        result.setConsumes(mapping.consumes().isEmpty() ? null : mapping.consumes());
        Mappings.format(mapping.headers() , result.getHeaders());
        result.setMethodType(Arrays.deepEquals(mapping.methodType() , Mappings.EMPTY_STR_ARRAY) ? null : mapping.methodType());
        Mappings.format(mapping.attributes() , result.getAttributes());
        result.setProduces(mapping.produces().isEmpty() ? null : mapping.produces());
        result.setUrl(mapping.value().isEmpty() ? "/" + clazz.getSimpleName() : mapping.value());
        result.setDefineClass(clazz);
        result.setClass(true);
        return result;
    }

    private static final void format(String[] values , Map map) {
        if (Arrays.deepEquals(values , Mappings.EMPTY_STR_ARRAY)) return;
        for (String value : values) {
            String[] tmp = StringOperation.split(value , Mappings.VALUE_SPLIT);
            map.put(tmp[0].trim() , tmp[1].trim());
        }
    }

    private Mappings() {
        throw new AssertionError("No" + Mappings.class + " for you!");
    }
}