/home/palakars/workspace-inprogress/code-in-progress/aitools3/aitools3-aq-invertedindex-cpp/src/jni/Postlist.java.cpp

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/* Copyright (C) 2010 webis.de
 * All rights reserved.
 */
#include "Postlist.java.h"
#include "JNIGateway.hpp"

// Do NOT include these methods in namespaces (changes the function signatures)
using namespace aitools::invertedindex;

/*
 * Class:     de_aitools_aq_invertedindex_core_Postlist
 * Method:    natGetLength
 * Signature: (I)I
 */
JNIEXPORT jint JNICALL Java_de_aitools_aq_invertedindex_core_Postlist_natGetLength
(JNIEnv* env, jobject jpostlist, jint oid)
{
        try
        {
                return JNIGateway::get_iterator(oid)->header().value_count;
        }
        catch (const std::exception& error)
        {
                env->ThrowNew(env->FindClass(JNIGateway::java_exception), error.what());
        }
        return 0;
}

/*
 * Class:     de_aitools_aq_invertedindex_core_Postlist
 * Method:    natDelete
 * Signature: (I)V
 */
JNIEXPORT void JNICALL Java_de_aitools_aq_invertedindex_core_Postlist_natDelete
(JNIEnv* env, jobject jpostlist, jint oid)
{
        JNIGateway::delete_iterator(oid);
}

/*
 * Class:     de_aitools_aq_invertedindex_core_Postlist
 * Method:    natRewind
 * Signature: (I)V
 */
JNIEXPORT void JNICALL Java_de_aitools_aq_invertedindex_core_Postlist_natRewind
(JNIEnv* env, jobject jpostlist, jint oid)
{
        try
        {
                JNIGateway::get_iterator(oid)->rewind();
        }
        catch (const std::exception& error)
        {
                env->ThrowNew(env->FindClass(JNIGateway::java_exception), error.what());
        }
}

/*
 * Class:     de_aitools_aq_invertedindex_core_Postlist
 * Method:    natNext
 * Signature: (I)[B
 */
JNIEXPORT jbyteArray JNICALL Java_de_aitools_aq_invertedindex_core_Postlist_natNext
(JNIEnv* env, jobject jpostlist, jint oid)
{
        try
        {
                const Iterator::SharedPointer& it(JNIGateway::get_iterator(oid));
                if (it->is_valid())
                {
                        jbyteArray jentry(env->NewByteArray(it->size()));
                        env->SetByteArrayRegion(jentry, 0, it->size(), (jbyte*)it->value());
                        it->advance();
                        return jentry;
                }
        }
        catch (const std::exception& error)
        {
                env->ThrowNew(env->FindClass(JNIGateway::java_exception), error.what());
        }
        return NULL;
}

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