fr.mixit.android.io.JsonExecutor.java Source code

Introduction

Here is the source code for fr.mixit.android.io.JsonExecutor.java

Source

/*
 * Copyright 2011 - 2013 Mathieu Calba
 *
 * 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 fr.mixit.android.io;

import java.io.IOException;
import java.io.InputStream;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import android.content.ContentResolver;
import android.content.Context;

public class JsonExecutor {
    protected final ContentResolver mResolver;

    public JsonExecutor() {
        this(null);
    }

    public JsonExecutor(ContentResolver contentResolver) {
        super();

        mResolver = contentResolver;
    }

    public void executeAndInsert(Context context, String assetName, JsonHandlerApply handler)
            throws JsonHandlerException {
        try {
            final InputStream input = context.getAssets().open(assetName);
            final byte[] buffer = new byte[input.available()];
            while (input.read(buffer) != -1) {
                ;
            }
            final String jsontext = new String(buffer);
            executeAndInsert(jsontext, handler);
        } catch (final JsonHandlerException e) {
            throw e;
        } catch (final IOException e) {
            throw new JsonHandlerException("Problem parsing local asset: " + assetName, e);
        }
    }

    public void executeAndInsert(String jsonText, JsonHandlerApply handler) throws JsonHandlerException {
        try {
            final JSONArray requestEntries = new JSONArray(jsonText);
            handler.parseAndApply(requestEntries, mResolver);
        } catch (final JsonHandlerException e) {
            throw e;
        } catch (final JSONException e) {
            try {
                final JSONObject resquestEntry = new JSONObject(jsonText);
                handler.parseAndApply(resquestEntry, mResolver);
            } catch (final JsonHandlerException ex) {
                throw ex;
            } catch (final JSONException ex) {
                throw new JsonHandlerException("Problem parsing jsonText :" + jsonText + ". Neither a JSONArray, "
                        + e.toString() + "nor a JSONObject" + ex.toString());
            }
        }
    }

    public <T> T executeAndGet(Context context, String assetName, JsonHandlerGet<T> handler)
            throws JsonHandlerException {
        try {
            final InputStream input = context.getAssets().open(assetName);
            final byte[] buffer = new byte[input.available()];
            while (input.read(buffer) != -1) {
                ;
            }
            final String jsontext = new String(buffer);
            return executeAndGet(jsontext, handler);
        } catch (final JsonHandlerException e) {
            throw e;
        } catch (final IOException e) {
            throw new JsonHandlerException("Problem parsing local asset: " + assetName, e);
        }
    }

    public <T> T executeAndGet(String jsonText, JsonHandlerGet<T> handler) throws JsonHandlerException {
        try {
            final JSONArray requestEntries = new JSONArray(jsonText);
            return handler.parseAndGet(requestEntries);
        } catch (final JsonHandlerException e) {
            throw e;
        } catch (final JSONException e) {
            try {
                final JSONObject resquestEntry = new JSONObject(jsonText);
                return handler.parseAndGet(resquestEntry);
            } catch (final JsonHandlerException ex) {
                throw ex;
            } catch (final JSONException ex) {
                throw new JsonHandlerException("Problem parsing jsonText :" + jsonText + ". Neither a JSONArray, "
                        + e.toString() + "nor a JSONObject" + ex.toString());
            }
        }
    }

}