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Merged
merged 3 commits into from
Jul 9, 2025
Merged

Feature/static constants for flags and envelope types added #349

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5a85742
added static constants for flags
Krmjn09 Jul 8, 2025
dfc5d39
changes done
Krmjn09 Jul 8, 2025
35a2236
Update modules/rntuple.mjs
Krmjn09 Jul 8, 2025
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36 changes: 29 additions & 7 deletions modules/rntuple.mjs
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Original file line number Diff line number Diff line change
Expand Up @@ -110,7 +110,20 @@ class RBufferReader {

}


// Envelope Types
// TODO: Define usage logic for envelope types in future
// const kEnvelopeTypeHeader = 0x01,
// kEnvelopeTypeFooter = 0x02,
// kEnvelopeTypePageList = 0x03,

// Field Flags
const kFlagRepetitiveField = 0x01,
kFlagProjectedField = 0x02,
kFlagHasTypeChecksum = 0x04,

// Column Flags
kFlagDeferredColumn = 0x01,
kFlagHasValueRange = 0x02;
class RNTupleDescriptorBuilder {

deserializeHeader(header_blob) {
Expand Down Expand Up @@ -246,9 +259,15 @@ class RNTupleDescriptorBuilder {
sourceFieldId = null,
checksum = null;

if (flags & 0x1) arraySize = reader.readU64();
if (flags & 0x2) sourceFieldId = reader.readU32();
if (flags & 0x4) checksum = reader.readU32();
if (flags & kFlagRepetitiveField)
arraySize = reader.readU64();

if (flags & kFlagProjectedField)
sourceFieldId = reader.readU32();

if (flags & kFlagHasTypeChecksum)
checksum = reader.readU32();


fieldDescriptors.push({
fieldVersion,
Expand Down Expand Up @@ -289,8 +308,11 @@ class RNTupleDescriptorBuilder {
let firstElementIndex = null,
minValue = null,
maxValue = null;
if (flags & 0x1) firstElementIndex = reader.readU64();
if (flags & 0x2) {

if (flags & kFlagDeferredColumn)
firstElementIndex = reader.readU64();

if (flags & kFlagHasValueRange) {
minValue = reader.readF64();
maxValue = reader.readF64();
}
Expand All @@ -307,7 +329,7 @@ class RNTupleDescriptorBuilder {
maxValue
};
column.isDeferred = function() {
return (this.flags & 0x01) !== 0;
return (this.flags & RNTupleDescriptorBuilder.kFlagDeferredColumn) !== 0;
};
column.isSuppressed = function() {
return this.firstElementIndex !== null && this.firstElementIndex < 0;
Expand Down