// 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.
import { Field } from './schema';
import { Vector } from './vector';
import { Chunked } from './vector/chunked';
export class Column extends Chunked {
    constructor(field, vectors = [], offsets) {
        vectors = Chunked.flatten(...vectors);
        super(field.type, vectors, offsets);
        this._field = field;
        if (vectors.length === 1 && !(this instanceof SingleChunkColumn)) {
            return new SingleChunkColumn(field, vectors[0], this._chunkOffsets);
        }
    }
    /** @nocollapse */
    static new(field, data, ...rest) {
        const chunks = Chunked.flatten(Array.isArray(data) ? [...data, ...rest] :
            data instanceof Vector ? [data, ...rest] :
                [Vector.new(data, ...rest)]);
        if (typeof field === 'string') {
            const type = chunks[0].data.type;
            field = new Field(field, type, true);
        }
        else if (!field.nullable && chunks.some(({ nullCount }) => nullCount > 0)) {
            field = field.clone({ nullable: true });
        }
        return new Column(field, chunks);
    }
    get field() { return this._field; }
    get name() { return this._field.name; }
    get nullable() { return this._field.nullable; }
    get metadata() { return this._field.metadata; }
    clone(chunks = this._chunks) {
        return new Column(this._field, chunks);
    }
    getChildAt(index) {
        if (index < 0 || index >= this.numChildren) {
            return null;
        }
        let columns = this._children || (this._children = []);
        let column, field, chunks;
        if (column = columns[index]) {
            return column;
        }
        if (field = (this.type.children || [])[index]) {
            chunks = this._chunks
                .map((vector) => vector.getChildAt(index))
                .filter((vec) => vec != null);
            if (chunks.length > 0) {
                return (columns[index] = new Column(field, chunks));
            }
        }
        return null;
    }
}
/** @ignore */
class SingleChunkColumn extends Column {
    constructor(field, vector, offsets) {
        super(field, [vector], offsets);
        this._chunk = vector;
    }
    search(index, then) {
        return then ? then(this, 0, index) : [0, index];
    }
    isValid(index) {
        return this._chunk.isValid(index);
    }
    get(index) {
        return this._chunk.get(index);
    }
    set(index, value) {
        this._chunk.set(index, value);
    }
    indexOf(element, offset) {
        return this._chunk.indexOf(element, offset);
    }
}

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