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163 lines (143 loc) · 4.49 KB
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/*
* Copyright (c) 2004, 2005, 2006 TADA AB - Taby Sweden
* Copyright (c) 2010, 2011 PostgreSQL Global Development Group
*
* Distributed under the terms shown in the file COPYRIGHT
* found in the root folder of this project or at
* http://wiki.tada.se/index.php?title=PLJava_License
*
* @author Thomas Hallgren
*/
#include "pljava/type/Type_priv.h"
#include "pljava/type/Array.h"
#include "pljava/Invocation.h"
static TypeClass s_shortClass;
static jclass s_Short_class;
static jclass s_ShortArray_class;
static jmethodID s_Short_init;
static jmethodID s_Short_shortValue;
/*
* short primitive type.
*/
static Datum _short_invoke(Type self, jclass cls, jmethodID method, jvalue* args, PG_FUNCTION_ARGS)
{
jshort v = JNI_callStaticShortMethodA(cls, method, args);
return Int16GetDatum(v);
}
static jvalue _short_coerceDatum(Type self, Datum arg)
{
jvalue result;
result.s = DatumGetInt16(arg);
return result;
}
static jvalue _shortArray_coerceDatum(Type self, Datum arg)
{
jvalue result;
ArrayType* v = DatumGetArrayTypeP(arg);
jsize nElems = (jsize)ArrayGetNItems(ARR_NDIM(v), ARR_DIMS(v));
jshortArray shortArray = JNI_newShortArray(nElems);
#if (PGSQL_MAJOR_VER == 8 && PGSQL_MINOR_VER < 2)
JNI_setShortArrayRegion(shortArray, 0, nElems, (jshort*)ARR_DATA_PTR(v));
#else
if(ARR_HASNULL(v))
{
jsize idx;
jboolean isCopy = JNI_FALSE;
bits8* nullBitMap = ARR_NULLBITMAP(v);
jshort* values = (jshort*)ARR_DATA_PTR(v);
jshort* elems = JNI_getShortArrayElements(shortArray, &isCopy);
for(idx = 0; idx < nElems; ++idx)
{
if(arrayIsNull(nullBitMap, idx))
elems[idx] = 0;
else
elems[idx] = *values++;
}
JNI_releaseShortArrayElements(shortArray, elems, JNI_COMMIT);
}
else
JNI_setShortArrayRegion(shortArray, 0, nElems, (jshort*)ARR_DATA_PTR(v));
#endif
result.l = (jobject)shortArray;
return result;
}
static Datum _shortArray_coerceObject(Type self, jobject shortArray)
{
ArrayType* v;
jsize nElems;
if(shortArray == 0)
return 0;
nElems = JNI_getArrayLength((jarray)shortArray);
#if (PGSQL_MAJOR_VER == 8 && PGSQL_MINOR_VER < 2)
v = createArrayType(nElems, sizeof(jshort), INT2OID);
#else
v = createArrayType(nElems, sizeof(jshort), INT2OID, false);
#endif
if(!JNI_isInstanceOf( shortArray, s_ShortArray_class))
JNI_getIntArrayRegion((jshortArray)shortArray, 0, nElems, (jshort*)ARR_DATA_PTR(v));
else
{
int idx = 0;
jshort *array = (jshort*)ARR_DATA_PTR(v);
for(idx = 0; idx < nElems; ++idx)
{
array[idx] = JNI_callShortMethod(JNI_getObjectArrayElement(shortArray, idx),
s_Short_shortValue);
}
}
PG_RETURN_ARRAYTYPE_P(v);
}
/*
* java.lang.Short type.
*/
static bool _Short_canReplace(Type self, Type other)
{
TypeClass cls = Type_getClass(other);
return Type_getClass(self) == cls || cls == s_shortClass;
}
static jvalue _Short_coerceDatum(Type self, Datum arg)
{
jvalue result;
result.l = JNI_newObject(s_Short_class, s_Short_init, DatumGetInt16(arg));
return result;
}
static Datum _Short_coerceObject(Type self, jobject shortObj)
{
return Int16GetDatum(shortObj == 0 ? 0 : JNI_callShortMethod(shortObj, s_Short_shortValue));
}
static Type _short_createArrayType(Type self, Oid arrayTypeId)
{
return Array_fromOid2(arrayTypeId, self, _shortArray_coerceDatum, _shortArray_coerceObject);
}
/* Make this datatype available to the postgres system.
*/
extern void Short_initialize(void);
void Short_initialize(void)
{
Type t_short;
Type t_Short;
TypeClass cls;
s_Short_class = JNI_newGlobalRef(PgObject_getJavaClass("java/lang/Short"));
s_ShortArray_class = JNI_newGlobalRef(PgObject_getJavaClass("[Ljava/lang/Short;"));
s_Short_init = PgObject_getJavaMethod(s_Short_class, "<init>", "(S)V");
s_Short_shortValue = PgObject_getJavaMethod(s_Short_class, "shortValue", "()S");
cls = TypeClass_alloc("type.Short");
cls->canReplaceType = _Short_canReplace;
cls->JNISignature = "Ljava/lang/Short;";
cls->javaTypeName = "java.lang.Short";
cls->coerceDatum = _Short_coerceDatum;
cls->coerceObject = _Short_coerceObject;
t_Short = TypeClass_allocInstance(cls, INT2OID);
cls = TypeClass_alloc("type.short");
cls->JNISignature = "S";
cls->javaTypeName = "short";
cls->invoke = _short_invoke;
cls->coerceDatum = _short_coerceDatum;
cls->coerceObject = _Short_coerceObject;
cls->createArrayType = _short_createArrayType;
s_shortClass = cls;
t_short = TypeClass_allocInstance(cls, INT2OID);
t_short->objectType = t_Short;
Type_registerType("short", t_short);
Type_registerType("java.lang.Short", t_Short);
}