Exemple #1
0
static Datum _Type_nextSRF(Type self, jobject rowProducer, jobject rowCollector)
{
	jobject tmp = JNI_callObjectMethod(rowProducer, s_Iterator_next);
	Datum result = Type_coerceObject(self, tmp);
	JNI_deleteLocalRef(tmp);
	return result;
}
Exemple #2
0
/*
 * Class:     org_postgresql_pljava_internal_TupleDesc
 * Method:    _formTuple
 * Signature: (J[Ljava/lang/Object;)Lorg/postgresql/pljava/internal/Tuple;
 */
JNIEXPORT jobject JNICALL
Java_org_postgresql_pljava_internal_TupleDesc__1formTuple(JNIEnv* env, jclass cls, jlong _this, jobjectArray jvalues)
{
	jobject result = 0;

	BEGIN_NATIVE
	Ptr2Long p2l;
	p2l.longVal = _this;
	PG_TRY();
	{
		jint   idx;
		HeapTuple tuple;
		MemoryContext curr;
		TupleDesc self = (TupleDesc)p2l.ptrVal;
		int    count   = self->natts;
		Datum* values  = (Datum*)palloc(count * sizeof(Datum));
		char*  nulls   = palloc(count);
		jobject typeMap = Invocation_getTypeMap();

		memset(values, 0,  count * sizeof(Datum));
		memset(nulls, 'n', count);	/* all values null initially */
	
		for(idx = 0; idx < count; ++idx)
		{
			jobject value = JNI_getObjectArrayElement(jvalues, idx);
			if(value != 0)
			{
				Type type = Type_fromOid(SPI_gettypeid(self, idx + 1), typeMap);
				values[idx] = Type_coerceObject(type, value);
				nulls[idx] = ' ';
			}
		}

		curr = MemoryContextSwitchTo(JavaMemoryContext);
		tuple = heap_formtuple(self, values, nulls);
		result = Tuple_internalCreate(tuple, false);
		MemoryContextSwitchTo(curr);
		pfree(values);
		pfree(nulls);
	}
	PG_CATCH();
	{
		Exception_throw_ERROR("heap_formtuple");
	}
	PG_END_TRY();
	END_NATIVE
	return result;
}
Exemple #3
0
static Datum _Array_coerceObject(Type self, jobject objArray)
{
	ArrayType* v;
	jsize idx;
	int    lowerBound = 1;
	Type   elemType = Type_getElementType(self);
	int    nElems   = (int)JNI_getArrayLength((jarray)objArray);
	Datum* values   = (Datum*)palloc(nElems * sizeof(Datum) + nElems * sizeof(bool));
	bool*  nulls    = (bool*)(values + nElems);

	for(idx = 0; idx < nElems; ++idx)
	{
		jobject obj = JNI_getObjectArrayElement(objArray, idx);
		if(obj == 0)
		{
			nulls[idx] = true;
			values[idx] = 0;
		}
		else
		{
			nulls[idx] = false;
			values[idx] = Type_coerceObject(elemType, obj);
			JNI_deleteLocalRef(obj);
		}
	}

	v = construct_md_array(
		values,
		nulls,
		1,
		&nElems,
		&lowerBound,
		Type_getOid(elemType),
		Type_getLength(elemType),
		Type_isByValue(elemType),
		Type_getAlign(elemType));

	pfree(values);
	PG_RETURN_ARRAYTYPE_P(v);
}