BoonJsonMessageBodyReader.java

package com.github.rmannibucau.boon.jaxrs;

import org.boon.json.JsonParserFactory;

import javax.ws.rs.Consumes;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.ext.MessageBodyReader;
import javax.ws.rs.ext.Provider;
import java.io.IOException;
import java.io.InputStream;
import java.io.Reader;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.util.concurrent.atomic.AtomicReference;

@Provider
@Consumes(MediaType.WILDCARD)
public class BoonJsonMessageBodyReader<T> implements MessageBodyReader<T>{
    private final AtomicReference<JsonParserFactory> factory = new AtomicReference<JsonParserFactory>();

    private String charset = "UTF-8";
    private boolean lax = false;
    private boolean chop = false;
    private boolean lazyChop = true;
    private String fieldAccessType = "FIELD";
    private boolean useAnnotations = false;

    private JsonParserFactory factory() {
        JsonParserFactory value = factory.get();
        if (value == null) {
            synchronized (factory) {
                value = factory.get();
                if (value == null) {
                    value = Boons.createJsonParserFactory(charset, lax, chop, lazyChop, fieldAccessType, useAnnotations);
                    factory.set(value);
                }
            }
        }
        return value;
    }

    protected void init(final JsonParserFactory factory) {
        if (factory != null) {
            this.factory.set(factory);
        } else {
            factory(); // force init
        }
    }

    @Override
    public T readFrom(final Class<T> tClass, final Type type, final Annotation[] annotations, final MediaType mediaType,
            final MultivaluedMap<String, String> stringStringMultivaluedMap, final InputStream inputStream) throws IOException {
        return factory().create().parse(tClass, inputStream);
    }

    @Override
    public boolean isReadable(final Class<?> aClass, final Type type, final Annotation[] annotations, final MediaType mediaType) {
        return Jsons.isJson(mediaType) && InputStream.class != aClass && Reader.class != aClass;
    }

    public void setCharset(final String charset) {
        this.charset = charset;
    }

    public void setLax(final boolean lax) {
        this.lax = lax;
    }

    public void setChop(final boolean chop) {
        this.chop = chop;
    }

    public void setLazyChop(final boolean lazyChop) {
        this.lazyChop = lazyChop;
    }

    public void setFieldAccessType(final String fieldAccessType) {
        this.fieldAccessType = fieldAccessType;
    }

    public void setUseAnnotations(final boolean useAnnotations) {
        this.useAnnotations = useAnnotations;
    }
}