feat(arrow/array): Add new arreflect package

arrow/array/arreflect/doc.go

@@ -0,0 +1,48 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Package arreflect provides utilities for converting between
+// Apache Arrow arrays and Go structs using reflection.
+//
+// The primary entry points are the generic functions [At], [ToSlice],
+// [FromSlice], [RecordToSlice], and [RecordFromSlice], which convert
+// between Arrow arrays/records and Go slices of structs.
+//
+// Schema inference is available via [InferSchema] and [InferType].
+//
+// Arrow struct tags control field mapping:
+//
+//	type MyRow struct {
+//	    Name  string  `arrow:"name"`
+//	    Score float64 `arrow:"score"`
+//	    Skip  string  `arrow:"-"`
+//	    Enc   string  `arrow:"enc,dict"`
+//	    T32   time.Time `arrow:"t32,time32"`
+//	}
+//
+// Temporal type overrides for time.Time fields:
+//
+//	arrow:"field,date32"   — use Date32 instead of Timestamp
+//	arrow:"field,date64"   — use Date64 instead of Timestamp
+//	arrow:"field,time32"   — use Time32(ms) instead of Timestamp
+//	arrow:"field,time64"   — use Time64(ns) instead of Timestamp
+//
+// Additional tag options:
+//
+//	arrow:"field,view"                  — use STRING_VIEW/BINARY_VIEW for string/bytes fields, or LIST_VIEW for slice fields
+//	arrow:"field,ree"                   — run-end encoding at top-level only (struct fields not supported)
+//	arrow:"field,decimal(precision,scale)" — override decimal precision and scale (e.g., arrow:",decimal(18,2)")
+package arreflect