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plv8_type.cc
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plv8_type.cc
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/*-------------------------------------------------------------------------
*
* plv8_type.cc : Postgres from/to v8 data converters.
*
* Copyright (c) 2009-2012, the PLV8JS Development Group.
*-------------------------------------------------------------------------
*/
#include "plv8.h"
extern "C" {
#if JSONB_DIRECT_CONVERSION
#include <time.h>
#endif
#if PG_VERSION_NUM >= 90300
#include "access/htup_details.h"
#endif
#include "catalog/pg_type.h"
#include "parser/parse_coerce.h"
#include "utils/array.h"
#include "utils/date.h"
#include "utils/datetime.h"
#include "utils/builtins.h"
#if PG_VERSION_NUM >= 90400
#include "utils/jsonb.h"
#endif
#include "utils/lsyscache.h"
#include "utils/syscache.h"
#include "utils/typcache.h"
#include "nodes/memnodes.h"
#include "utils/memutils.h"
#include "fmgr.h"
} // extern "C"
using namespace v8;
static Datum ToScalarDatum(Handle<v8::Value> value, bool *isnull, plv8_type *type);
static Datum ToArrayDatum(Handle<v8::Value> value, bool *isnull, plv8_type *type);
static Datum ToRecordDatum(Handle<v8::Value> value, bool *isnull, plv8_type *type);
static Local<v8::Value> ToScalarValue(Datum datum, bool isnull, plv8_type *type);
static Local<v8::Value> ToArrayValue(Datum datum, bool isnull, plv8_type *type);
static Local<v8::Value> ToRecordValue(Datum datum, bool isnull, plv8_type *type);
static double TimestampTzToEpoch(TimestampTz tm);
static Datum EpochToTimestampTz(double epoch);
static double DateToEpoch(DateADT date);
static Datum EpochToDate(double epoch);
void
plv8_fill_type(plv8_type *type, Oid typid, MemoryContext mcxt)
{
bool ispreferred;
if (!mcxt)
mcxt = CurrentMemoryContext;
type->typid = typid;
type->fn_input.fn_mcxt = type->fn_output.fn_mcxt = mcxt;
get_type_category_preferred(typid, &type->category, &ispreferred);
type->is_composite = (type->category == TYPCATEGORY_COMPOSITE);
get_typlenbyvalalign(typid, &type->len, &type->byval, &type->align);
if (get_typtype(typid) == TYPTYPE_DOMAIN)
{
HeapTuple tp;
Form_pg_type typtup;
#if PG_VERSION_NUM < 90100
tp = SearchSysCache(TYPEOID, ObjectIdGetDatum(typid), 0, 0, 0);
#else
tp = SearchSysCache1(TYPEOID, ObjectIdGetDatum(typid));
#endif
if (HeapTupleIsValid(tp))
{
/*
* Check if the type is the external array types.
*/
typtup = (Form_pg_type) GETSTRUCT(tp);
if (strcmp(NameStr(typtup->typname),
"plv8_int2array") == 0)
{
type->ext_array = kExternalShortArray;
}
else if (strcmp(NameStr(typtup->typname),
"plv8_int4array") == 0)
{
type->ext_array = kExternalIntArray;
}
else if (strcmp(NameStr(typtup->typname),
"plv8_float4array") == 0)
{
type->ext_array = kExternalFloatArray;
}
else if (strcmp(NameStr(typtup->typname),
"plv8_float8array") == 0)
{
type->ext_array = kExternalDoubleArray;
}
else if (strcmp(NameStr(typtup->typname),
"plv8_int8array") == 0)
{
type->ext_array = kExternalInt64Array;
}
ReleaseSysCache(tp);
}
else
elog(ERROR, "cache lookup failed for type %d", typid);
if (type->ext_array)
return;
/* If not, do as usual. */
}
if (type->category == TYPCATEGORY_ARRAY)
{
Oid elemid = get_element_type(typid);
if (elemid == InvalidOid)
ereport(ERROR,
(errmsg("cannot determine element type of array: %u", typid)));
type->typid = elemid;
type->is_composite = (TypeCategory(elemid) == TYPCATEGORY_COMPOSITE);
get_typlenbyvalalign(type->typid, &type->len, &type->byval, &type->align);
}
}
/*
* Return the database type inferred by the JS value type.
* If none looks appropriate, InvalidOid is returned (currently,
* objects and arrays are in this case).
*/
Oid
inferred_datum_type(Handle<v8::Value> value)
{
if (value->IsUndefined() || value->IsNull())
return TEXTOID;
if (value->IsBoolean())
return BOOLOID;
else if (value->IsInt32())
return INT4OID;
else if (value->IsUint32())
return INT8OID;
else if (value->IsBigInt())
return INT8OID;
else if (value->IsNumber())
return FLOAT8OID;
else if (value->IsString())
return TEXTOID;
else if (value->IsDate())
return TIMESTAMPOID;
/*
else if (value->IsObject())
else if (value->IsArray())
*/
return InvalidOid;
}
#if PG_VERSION_NUM >= 90400 && JSONB_DIRECT_CONVERSION
// jsonb types moved in pg10
#if PG_VERSION_NUM < 100000
#define jbvString JsonbValue::jbvString
#define jbvNumeric JsonbValue::jbvNumeric
#define jbvBool JsonbValue::jbvBool
#define jbvObject JsonbValue::jbvObject
#define jbvArray JsonbValue::jbvArray
#define jbvNull JsonbValue::jbvNull
#endif
static Local<v8::Value>
GetJsonbValue(JsonbValue *scalarVal) {
Isolate *isolate = Isolate::GetCurrent();
if (scalarVal->type == jbvNull) {
return Local<v8::Value>::New(isolate, Null(isolate));
} else if (scalarVal->type == jbvString) {
char t[ scalarVal->val.string.len + 1 ];
strncpy(t, scalarVal->val.string.val, scalarVal->val.string.len);
t[ scalarVal->val.string.len ] = '\0';
return Local<v8::Value>::New(isolate, v8::String::NewFromUtf8(isolate, t).ToLocalChecked());
} else if (scalarVal->type == jbvNumeric) {
return Local<v8::Value>::New(isolate, Number::New(isolate, DatumGetFloat8(DirectFunctionCall1(numeric_float8, PointerGetDatum(scalarVal->val.numeric)))));
} else if (scalarVal->type == jbvBool) {
return Local<v8::Value>::New(isolate, v8::Boolean::New(isolate, scalarVal->val.boolean));
} else {
elog(ERROR, "unknown jsonb scalar type");
return Local<v8::Value>::New(isolate, Null(isolate));
}
}
static Local<v8::Object>
JsonbIterate(JsonbIterator **it, Local<v8::Object> container) {
Isolate *isolate = Isolate::GetCurrent();
Local<Context> context = isolate->GetCurrentContext();
JsonbValue val;
int32 count = 0;
JsonbIteratorToken token;
Local<v8::Value> key;
Local<v8::Object> obj;
token = JsonbIteratorNext(it, &val, false);
while (token != WJB_DONE) {
switch (token) {
case WJB_BEGIN_OBJECT:
obj = v8::Object::New(isolate);
if (container->IsArray()) {
container->Set(context, count, JsonbIterate(it, obj)).Check();
count++;
} else {
container->Set(context, key, JsonbIterate(it, obj)).Check();
}
break;
case WJB_END_OBJECT:
return container;
break;
case WJB_BEGIN_ARRAY:
obj = v8::Array::New(isolate);
if (container->IsArray()) {
container->Set(context, count, JsonbIterate(it, obj)).Check();
count++;
} else {
container->Set(context, key, JsonbIterate(it, obj)).Check();
}
break;
case WJB_END_ARRAY:
return container;
break;
case WJB_KEY:
key = GetJsonbValue(&val);
break;
case WJB_VALUE:
// object value
container->Set(context, key, GetJsonbValue(&val)).Check();
break;
case WJB_ELEM:
// array element
container->Set(context, count, GetJsonbValue(&val)).Check();
count++;
break;
case WJB_DONE:
return container;
break;
default:
elog(ERROR, "unknown jsonb iterator value");
}
token = JsonbIteratorNext(it, &val, false);
}
return container;
}
static Local<Object>
ConvertJsonb(JsonbContainer *in) {
Isolate *isolate = Isolate::GetCurrent();
JsonbValue val;
JsonbIterator *it = JsonbIteratorInit(in);
JsonbIteratorToken token = JsonbIteratorNext(&it, &val, false);
Local<Object> container;
if (token == WJB_BEGIN_ARRAY) {
container = v8::Array::New(isolate);
} else {
container = v8::Object::New(isolate);
}
return JsonbIterate(&it, container);
}
static JsonbValue *
JsonbObjectFromObject(JsonbParseState **pstate, Local<v8::Object> object);
static JsonbValue *
JsonbArrayFromArray(JsonbParseState **pstate, Local<v8::Object> object);
static void LogType(Local<v8::Value> val, bool asError = true) {
if( val->IsUndefined() )
elog((asError ? ERROR : NOTICE), "Unaccounted for type: Undefined");
if( val->IsNull() )
elog((asError ? ERROR : NOTICE), "Unaccounted for type: Null");
if( val->IsTrue() )
elog((asError ? ERROR : NOTICE), "Unaccounted for type: True");
if( val->IsFalse() )
elog((asError ? ERROR : NOTICE), "Unaccounted for type: False");
if( val->IsName() )
elog((asError ? ERROR : NOTICE), "Unaccounted for type: Name");
if( val->IsString() )
elog((asError ? ERROR : NOTICE), "Unaccounted for type: String");
if( val->IsSymbol() )
elog((asError ? ERROR : NOTICE), "Unaccounted for type: Symbol");
if( val->IsFunction() )
elog((asError ? ERROR : NOTICE), "Unaccounted for type: Function");
if( val->IsArray() )
elog((asError ? ERROR : NOTICE), "Unaccounted for type: Array");
if( val->IsObject() )
elog((asError ? ERROR : NOTICE), "Unaccounted for type: Object");
if( val->IsBoolean() )
elog((asError ? ERROR : NOTICE), "Unaccounted for type: Boolean");
if( val->IsNumber() )
elog((asError ? ERROR : NOTICE), "Unaccounted for type: Number");
if( val->IsExternal() )
elog((asError ? ERROR : NOTICE), "Unaccounted for type: External");
if( val->IsInt32() )
elog((asError ? ERROR : NOTICE), "Unaccounted for type: Int32");
if( val->IsUint32() )
elog((asError ? ERROR : NOTICE), "Unaccounted for type: Uint32");
if( val->IsDate() )
elog((asError ? ERROR : NOTICE), "Unaccounted for type: Date");
if( val->IsArgumentsObject() )
elog((asError ? ERROR : NOTICE), "Unaccounted for type: Arguments Object");
if( val->IsBooleanObject() )
elog((asError ? ERROR : NOTICE), "Unaccounted for type: Boolean Object");
if( val->IsNumberObject() )
elog((asError ? ERROR : NOTICE), "Unaccounted for type: Number Object");
if( val->IsStringObject() )
elog((asError ? ERROR : NOTICE), "Unaccounted for type: String Object");
if( val->IsSymbolObject() )
elog((asError ? ERROR : NOTICE), "Unaccounted for type: Symbol Object");
if( val->IsNativeError() )
elog((asError ? ERROR : NOTICE), "Unaccounted for type: Native Error");
if( val->IsRegExp() )
elog((asError ? ERROR : NOTICE), "Unaccounted for type: RegExp");
if( val->IsGeneratorFunction() )
elog((asError ? ERROR : NOTICE), "Unaccounted for type: Generator Function");
if( val->IsGeneratorObject() )
elog((asError ? ERROR : NOTICE), "Unaccounted for type: Generator Object");
if( val->IsPromise() )
elog((asError ? ERROR : NOTICE), "Unaccounted for type: Promise");
if( val->IsMap() )
elog((asError ? ERROR : NOTICE), "Unaccounted for type: Map");
if( val->IsSet() )
elog((asError ? ERROR : NOTICE), "Unaccounted for type: Set");
if( val->IsMapIterator() )
elog((asError ? ERROR : NOTICE), "Unaccounted for type: Map Iterator");
if( val->IsSetIterator() )
elog((asError ? ERROR : NOTICE), "Unaccounted for type: Set Iterator");
if( val->IsWeakMap() )
elog((asError ? ERROR : NOTICE), "Unaccounted for type: Weak Map");
if( val->IsWeakSet() )
elog((asError ? ERROR : NOTICE), "Unaccounted for type: Weak Set");
if( val->IsArrayBuffer() )
elog((asError ? ERROR : NOTICE), "Unaccounted for type: Array Buffer");
if( val->IsArrayBufferView() )
elog((asError ? ERROR : NOTICE), "Unaccounted for type: Array Buffer View");
if( val->IsTypedArray() )
elog((asError ? ERROR : NOTICE), "Unaccounted for type: Typed Array");
if( val->IsUint8Array() )
elog((asError ? ERROR : NOTICE), "Unaccounted for type: Uint8 Array");
if( val->IsUint8ClampedArray() )
elog((asError ? ERROR : NOTICE), "Unaccounted for type: Uint8 Clamped Array");
if( val->IsInt8Array() )
elog((asError ? ERROR : NOTICE), "Unaccounted for type: Int8 Array");
if( val->IsUint16Array() )
elog((asError ? ERROR : NOTICE), "Unaccounted for type: Uint16 Array");
if( val->IsInt16Array() )
elog((asError ? ERROR : NOTICE), "Unaccounted for type: Int16 Array");
if( val->IsUint32Array() )
elog((asError ? ERROR : NOTICE), "Unaccounted for type: Uint32 Array");
if( val->IsInt32Array() )
elog((asError ? ERROR : NOTICE), "Unaccounted for type: Int32 Array");
if( val->IsFloat32Array() )
elog((asError ? ERROR : NOTICE), "Unaccounted for type: Float32 Array");
if( val->IsFloat64Array() )
elog((asError ? ERROR : NOTICE), "Unaccounted for type: Float64 Array");
if( val->IsDataView() )
elog((asError ? ERROR : NOTICE), "Unaccounted for type: Data View");
if( val->IsSharedArrayBuffer() )
elog((asError ? ERROR : NOTICE), "Unaccounted for type: Shared Buffer Array");
}
static char *
TimeAs8601 (double millis) {
char tmp[100];
char *buf = (char *)palloc(25);
time_t t = (time_t) (millis / 1000);
strftime (tmp, 25, "%Y-%m-%dT%H:%M:%S", gmtime(&t));
double integral;
double fractional = modf(millis / 1000, &integral);
sprintf(buf, "%s.%03dZ", tmp, (int) (fractional * 1000));
return buf;
}
static JsonbValue *
JsonbFromValue(JsonbParseState **pstate, Local<v8::Value> value, JsonbIteratorToken type) {
Isolate *isolate = Isolate::GetCurrent();
Local<Context> context = isolate->GetCurrentContext();
JsonbValue val;
// if the token type is a key, the only valid value is jbvString
if (type == WJB_KEY) {
val.type = jbvString;
v8::String::Utf8Value utf8(isolate, value->ToString(context).ToLocalChecked());
val.val.string.val = ToCStringCopy(utf8);
val.val.string.len = utf8.length();
} else {
if (value->IsBoolean()) {
val.type = jbvBool;
val.val.boolean = value->BooleanValue(isolate);
} else if (value->IsNull()) {
val.type = jbvNull;
} else if (value->IsUndefined()) {
return NULL;
} else if (value->IsString()) {
val.type = jbvString;
v8::String::Utf8Value utf8(isolate, value->ToString(context).ToLocalChecked());
val.val.string.val = ToCStringCopy(utf8);
val.val.string.len = utf8.length();
} else if (value->IsNumber()) {
if (value->IsInt32()) {
int32 iv = value->Int32Value(context).ToChecked();
val.val.numeric = DatumGetNumeric(DirectFunctionCall1(int4_numeric, Int32GetDatum(iv)));
val.type = jbvNumeric;
} else if (value->IsUint32()) {
int64 iv = (int64) value->Uint32Value(context).ToChecked();
val.val.numeric = DatumGetNumeric(DirectFunctionCall1(int8_numeric, Int64GetDatum(iv)));
val.type = jbvNumeric;
} else {
float8 fv = (float8) value->NumberValue(context).ToChecked();
val.val.numeric = DatumGetNumeric(DirectFunctionCall1(float8_numeric, Float8GetDatum(fv)));
val.type = jbvNumeric;
}
} else if (value->IsDate()) {
double t = value->NumberValue(context).ToChecked();
if (isnan(t)) {
val.type = jbvNull;
} else {
val.val.string.val = TimeAs8601(t);
val.val.string.len = 24;
val.type = jbvString;
}
} else {
LogType(value, false);
val.type = jbvString;
v8::String::Utf8Value utf8(isolate, value->ToString(context).ToLocalChecked());
val.val.string.val = ToCStringCopy(utf8);
val.val.string.len = utf8.length();
}
}
return pushJsonbValue(pstate, type, &val);
}
static JsonbValue *
JsonbArrayFromArray(JsonbParseState **pstate, Local<v8::Object> object) {
Isolate *isolate = Isolate::GetCurrent();
Local<Context> context = isolate->GetCurrentContext();
JsonbValue *val = pushJsonbValue(pstate, WJB_BEGIN_ARRAY, NULL);
Local<v8::Array> a = Local<v8::Array>::Cast(object);
for (size_t i = 0; i < a->Length(); i++) {
Local<v8::Value> o = a->Get(context, i).ToLocalChecked();
if (o->IsArray()) {
val = JsonbArrayFromArray(pstate, Local<v8::Array>::Cast(o));
} else if (o->IsObject()) {
val = JsonbObjectFromObject(pstate, Local<v8::Object>::Cast(o));
} else {
val = JsonbFromValue(pstate, o, WJB_ELEM);
}
}
val = pushJsonbValue(pstate, WJB_END_ARRAY, NULL);
return val;
}
static JsonbValue *
JsonbObjectFromObject(JsonbParseState **pstate, Local<v8::Object> object) {
Isolate *isolate = Isolate::GetCurrent();
Local<Context> context = isolate->GetCurrentContext();
JsonbValue *val = pushJsonbValue(pstate, WJB_BEGIN_OBJECT, NULL);
Local<Array> arr = object->GetOwnPropertyNames(context).ToLocalChecked();
for (size_t i = 0; i < arr->Length(); i++) {
Local<v8::Value> v = arr->Get(context, i).ToLocalChecked();
val = JsonbFromValue(pstate, v, WJB_KEY);
Local<v8::Value> o = object->Get(context, v).ToLocalChecked();
if (o->IsDate()) {
val = JsonbFromValue(pstate, o, WJB_VALUE);
} else if (o->IsArray()) {
val = JsonbArrayFromArray(pstate, Local<v8::Array>::Cast(o));
} else if (o->IsObject()) {
val = JsonbObjectFromObject(pstate, Local<v8::Object>::Cast(o));
} else {
val = JsonbFromValue(pstate, o, WJB_VALUE);
}
}
val = pushJsonbValue(pstate, WJB_END_OBJECT, NULL);
return val;
}
static Jsonb *
ConvertObject(Local<v8::Object> object) {
// create a new memory context for conversion
MemoryContext oldcontext = CurrentMemoryContext;
MemoryContext conversion_context;
#if PG_VERSION_NUM < 110000
conversion_context = AllocSetContextCreate(
CurrentMemoryContext,
"JSONB Conversion Context",
ALLOCSET_SMALL_MINSIZE,
ALLOCSET_SMALL_INITSIZE,
ALLOCSET_SMALL_MAXSIZE);
#else
conversion_context = AllocSetContextCreate(CurrentMemoryContext,
"JSONB Conversion Context",
ALLOCSET_SMALL_SIZES);
#endif
MemoryContextSwitchTo(conversion_context);
JsonbParseState *pstate = NULL;
JsonbValue *val;
if (object->IsArray()) {
val = JsonbArrayFromArray(&pstate, object);
} else if (object->IsObject()) {
val = JsonbObjectFromObject(&pstate, object);
} else {
pushJsonbValue(&pstate, WJB_BEGIN_ARRAY, NULL);
JsonbFromValue(&pstate, object, WJB_ELEM);
val = pushJsonbValue(&pstate, WJB_END_ARRAY, NULL);
val->val.array.rawScalar = true;
}
MemoryContextSwitchTo(oldcontext);
Jsonb *ret = JsonbValueToJsonb(val);
MemoryContextDelete(conversion_context);
return ret;
}
#endif
static Local<Object>
CreateExternalArray(void *data, plv8_external_array_type array_type,
int byte_size, Datum datum)
{
Isolate* isolate = Isolate::GetCurrent();
Local<v8::ArrayBuffer> buffer;
Local<v8::TypedArray> array;
buffer = v8::ArrayBuffer::New(isolate, byte_size);
if (buffer.IsEmpty())
{
return {};
}
switch (array_type)
{
case kExternalByteArray:
array = v8::Int8Array::New(buffer, 0, byte_size);
break;
case kExternalUnsignedByteArray:
array = v8::Uint8Array::New(buffer, 0, byte_size);
break;
case kExternalShortArray:
array = v8::Int16Array::New(buffer, 0, byte_size / sizeof(int16));
break;
case kExternalUnsignedShortArray:
array = v8::Uint16Array::New(buffer, 0, byte_size / sizeof(int16));
break;
case kExternalIntArray:
array = v8::Int32Array::New(buffer, 0, byte_size / sizeof(int32));
break;
case kExternalUnsignedIntArray:
array = v8::Uint32Array::New(buffer, 0, byte_size / sizeof(int32));
break;
case kExternalFloatArray:
array = v8::Float32Array::New(buffer, 0, byte_size / sizeof(float4));
break;
case kExternalDoubleArray:
array = v8::Float64Array::New(buffer, 0, byte_size / sizeof(float8));
break;
case kExternalInt64Array:
array = v8::BigInt64Array::New(buffer, 0, byte_size / sizeof(int64));
default:
throw js_error("unexpected array type");
}
array->SetInternalField(0, External::New(isolate, DatumGetPointer(datum)));
// needs to be a copy, as the data could go away
memcpy(buffer->GetBackingStore()->Data(), data, byte_size);
return array;
}
static void *
ExtractExternalArrayDatum(Handle<v8::Value> value)
{
if (value->IsUndefined() || value->IsNull()) {
return NULL;
}
if (value->IsTypedArray())
{
Handle<Object> object = Handle<Object>::Cast(value);
return Handle<External>::Cast(object->GetInternalField(0))->Value();
}
return NULL;
}
Datum
ToDatum(Handle<v8::Value> value, bool *isnull, plv8_type *type)
{
if (type->category == TYPCATEGORY_ARRAY)
return ToArrayDatum(value, isnull, type);
else
return ToScalarDatum(value, isnull, type);
}
static Datum
ToScalarDatum(Handle<v8::Value> value, bool *isnull, plv8_type *type)
{
Isolate* isolate = Isolate::GetCurrent();
if (type->category == TYPCATEGORY_COMPOSITE)
return ToRecordDatum(value, isnull, type);
if (value->IsUndefined() || value->IsNull())
{
*isnull = true;
return (Datum) 0;
}
*isnull = false;
switch (type->typid)
{
case OIDOID:
if (value->IsNumber())
return ObjectIdGetDatum(value->Uint32Value(isolate->GetCurrentContext()).ToChecked());
break;
case BOOLOID:
if (value->IsBoolean())
return BoolGetDatum(value->BooleanValue(isolate));
break;
case INT2OID:
if (value->IsNumber())
#ifdef CHECK_INTEGER_OVERFLOW
return DirectFunctionCall1(int82,
Int64GetDatum(value->IntegerValue()));
#else
return Int16GetDatum((int16) value->Int32Value(isolate->GetCurrentContext()).ToChecked());
#endif
break;
case INT4OID:
if (value->IsNumber())
#ifdef CHECK_INTEGER_OVERFLOW
return DirectFunctionCall1(int84,
Int64GetDatum(value->IntegerValue()));
#else
return Int32GetDatum((int32) value->Int32Value(isolate->GetCurrentContext()).ToChecked());
#endif
break;
case INT8OID:
if (value->IsBigInt()) {
BigInt *b = BigInt::Cast(*value);
return Int64GetDatum((int64) b->Int64Value());
}
if (value->IsNumber())
return Int64GetDatum((int64) value->IntegerValue(isolate->GetCurrentContext()).ToChecked());
break;
case FLOAT4OID:
if (value->IsNumber())
return Float4GetDatum((float4) value->NumberValue(isolate->GetCurrentContext()).ToChecked());
break;
case FLOAT8OID:
if (value->IsNumber())
return Float8GetDatum((float8) value->NumberValue(isolate->GetCurrentContext()).ToChecked());
break;
case NUMERICOID:
if (value->IsBigInt()) {
v8::String::Utf8Value utf8(isolate, value->ToString(isolate->GetCurrentContext()).ToLocalChecked());
return DirectFunctionCall3(numeric_in, (Datum) *utf8, ObjectIdGetDatum(InvalidOid), Int32GetDatum((int32) -1));
}
if (value->IsNumber())
return DirectFunctionCall1(float8_numeric,
Float8GetDatum((float8) value->NumberValue(isolate->GetCurrentContext()).ToChecked()));
break;
case DATEOID:
if (value->IsDate())
return EpochToDate(value->NumberValue(isolate->GetCurrentContext()).ToChecked());
break;
case TIMESTAMPOID:
case TIMESTAMPTZOID:
if (value->IsDate())
return EpochToTimestampTz(value->NumberValue(isolate->GetCurrentContext()).ToChecked());
break;
case BYTEAOID:
{
if (value->IsUint8Array() || value->IsInt8Array()) {
v8::Handle<v8::Uint8Array> array = v8::Handle<v8::Uint8Array>::Cast(value);
void *data = array->Buffer()->GetBackingStore()->Data();
size_t offset = array->ByteOffset();
size_t len = array->Length();
size_t size = len + VARHDRSZ;
void *result = (void *) palloc(size);
SET_VARSIZE(result, size);
char *local = (char *) data;
memcpy(VARDATA(result), &local[offset], len);
return PointerGetDatum(result);
}
if (value->IsUint16Array() || value->IsInt16Array()) {
v8::Handle<v8::Uint16Array> array = v8::Handle<v8::Uint16Array>::Cast(value);
int *data = (int *) array->Buffer()->GetBackingStore()->Data();
size_t offset = array->ByteOffset();
size_t len = array->ByteLength();
size_t size = len + VARHDRSZ;
void *result = (void *) palloc(size);
SET_VARSIZE(result, size);
char *local = (char *) data;
memcpy(VARDATA(result), &local[offset], len);
return PointerGetDatum(result);
}
if (value->IsUint32Array() || value->IsInt32Array()) {
v8::Handle<v8::Uint32Array> array = v8::Handle<v8::Uint32Array>::Cast(value);
void *data = array->Buffer()->GetBackingStore()->Data();
size_t offset = array->ByteOffset();
size_t len = array->ByteLength();
size_t size = len + VARHDRSZ;
void *result = (void *) palloc(size);
SET_VARSIZE(result, size);
char *local = (char *) data;
memcpy(VARDATA(result), &local[offset], len);
return PointerGetDatum(result);
}
if (value->IsArrayBuffer()) {
v8::Handle<v8::ArrayBuffer> array = v8::Handle<v8::ArrayBuffer>::Cast(value);
void *data = array->GetBackingStore()->Data();
int len = array->ByteLength();
size_t size = len + VARHDRSZ;
void *result = (void *) palloc(size);
SET_VARSIZE(result, size);
memcpy(VARDATA(result), data, len);
return PointerGetDatum(result);
}
void *datum_p = ExtractExternalArrayDatum(value);
if (datum_p)
{
return PointerGetDatum(datum_p);
}
}
break;
#if PG_VERSION_NUM >= 90400
case JSONBOID:
#if JSONB_DIRECT_CONVERSION
{
Jsonb *obj = ConvertObject(Local<v8::Object>::Cast(value));
#if PG_VERSION_NUM < 110000
PG_RETURN_JSONB(DatumGetJsonb(obj));
#else
PG_RETURN_JSONB_P(DatumGetJsonbP((unsigned long)obj));
#endif // PG_VERSION_NUM < 110000
}
#else // JSONB_DIRECT_CONVERSION
if (value->IsObject() || value->IsArray())
{
JSONObject JSON;
Handle<v8::Value> result = JSON.Stringify(value);
CString str(result);
#if PG_VERSION_NUM < 110000
// lots of casting, but it ends up working - there is no CStringGetJsonb exposed
return (Datum) DatumGetJsonb(DirectFunctionCall1(jsonb_in, (Datum) (char *) str));
#else
return (Datum) DatumGetJsonbP(DirectFunctionCall1(jsonb_in, (Datum) (char *) str));
#endif
}
#endif // JSONB_DIRECT_CONVERSION
break;
#endif
#if PG_VERSION_NUM >= 90200
case JSONOID:
if (value->IsObject() || value->IsArray())
{
JSONObject JSON;
Handle<v8::Value> result = JSON.Stringify(value);
CString str(result);
return CStringGetTextDatum(str);
}
break;
#endif
}
/* Use lexical cast for non-numeric types. */
CString str(value);
Datum result;
PG_TRY();
{
if (type->fn_input.fn_addr == NULL)
{
Oid input_func;
getTypeInputInfo(type->typid, &input_func, &type->ioparam);
fmgr_info_cxt(input_func, &type->fn_input, type->fn_input.fn_mcxt);
}
result = InputFunctionCall(&type->fn_input, str, type->ioparam, -1);
}
PG_CATCH();
{
throw pg_error();
}
PG_END_TRY();
return result;
}
static Datum
ToArrayDatum(Handle<v8::Value> value, bool *isnull, plv8_type *type)
{
int length;
Datum *values;
bool *nulls;
int ndims[1];
int lbs[] = {1};
ArrayType *result;
Isolate *isolate = Isolate::GetCurrent();
Local<Context> context = isolate->GetCurrentContext();
if (value->IsUndefined() || value->IsNull())
{
*isnull = true;
return (Datum) 0;
}
void *datum_p = ExtractExternalArrayDatum(value);
if (datum_p)
{
*isnull = false;
return PointerGetDatum(datum_p);
}
Handle<Array> array(Handle<Array>::Cast(value));
if (array.IsEmpty() || !array->IsArray())
throw js_error("value is not an Array");
length = array->Length();
values = (Datum *) palloc(sizeof(Datum) * length);
nulls = (bool *) palloc(sizeof(bool) * length);
ndims[0] = length;
for (int i = 0; i < length; i++) {
if (type->is_composite)
{
values[i] = ToRecordDatum(array->Get(context, i).ToLocalChecked(), &nulls[i], type);
} else {
values[i] = ToScalarDatum(array->Get(context, i).ToLocalChecked(), &nulls[i], type);
}
}
result = construct_md_array(values, nulls, 1, ndims, lbs,
type->typid, type->len, type->byval, type->align);
pfree(values);
pfree(nulls);
*isnull = false;
return PointerGetDatum(result);
}
static Datum
ToRecordDatum(Handle<v8::Value> value, bool *isnull, plv8_type *type)
{
Datum result;
TupleDesc tupdesc;
if (value->IsUndefined() || value->IsNull())
{
*isnull = true;
return (Datum) 0;
}
PG_TRY();
{
tupdesc = lookup_rowtype_tupdesc(type->typid, -1);
}
PG_CATCH();
{
throw pg_error();
}
PG_END_TRY();
Converter conv(tupdesc);
result = conv.ToDatum(value);
ReleaseTupleDesc(tupdesc);
*isnull = false;
return result;
}
Local<v8::Value>
ToValue(Datum datum, bool isnull, plv8_type *type)
{
Isolate* isolate = Isolate::GetCurrent();
if (isnull)
return Local<v8::Value>::New(isolate, Null(isolate));
else if (type->category == TYPCATEGORY_ARRAY || type->typid == RECORDARRAYOID)
return ToArrayValue(datum, isnull, type);
else if (type->category == TYPCATEGORY_COMPOSITE || type->typid == RECORDOID)
return ToRecordValue(datum, isnull, type);
else
return ToScalarValue(datum, isnull, type);
}
static Local<v8::Value>
ToScalarValue(Datum datum, bool isnull, plv8_type *type)
{
Isolate* isolate = Isolate::GetCurrent();
switch (type->typid)
{
case OIDOID:
return Uint32::New(isolate, DatumGetObjectId(datum));
case BOOLOID:
return v8::Boolean::New(isolate, DatumGetBool(datum));
case INT2OID:
return Int32::New(isolate, DatumGetInt16(datum));
case INT4OID:
return Int32::New(isolate, DatumGetInt32(datum));
case INT8OID: {
#if BIGINT_GRACEFUL
int64 v = DatumGetInt64(datum);
if (v > INT32_MAX || v < INT32_MIN)
return BigInt::New(isolate, v);
return Number::New(isolate, v);
#else
return BigInt::New(isolate, DatumGetInt64(datum));
#endif
}
case FLOAT4OID:
return Number::New(isolate, DatumGetFloat4(datum));
case FLOAT8OID:
return Number::New(isolate, DatumGetFloat8(datum));
case NUMERICOID:
return Number::New(isolate, DatumGetFloat8(
DirectFunctionCall1(numeric_float8, datum)));
case DATEOID:
return Date::New(isolate->GetCurrentContext(), DateToEpoch(DatumGetDateADT(datum))).ToLocalChecked();
case TIMESTAMPOID:
case TIMESTAMPTZOID:
return Date::New(isolate->GetCurrentContext(), TimestampTzToEpoch(DatumGetTimestampTz(datum))).ToLocalChecked();
case TEXTOID:
case VARCHAROID:
case BPCHAROID:
case XMLOID:
{
void *p = PG_DETOAST_DATUM_PACKED(datum);
const char *str = VARDATA_ANY(p);
int len = VARSIZE_ANY_EXHDR(p);
Local<v8::String> result = ToString(str, len);
if (p != DatumGetPointer(datum))
pfree(p); // free if detoasted
return result;
}
case BYTEAOID:
{
void *p = PG_DETOAST_DATUM_COPY(datum);
return CreateExternalArray(VARDATA_ANY(p),
kExternalUnsignedByteArray,
VARSIZE_ANY_EXHDR(p),
PointerGetDatum(p));
}
#if PG_VERSION_NUM >= 90200