/
HBaseCollectionLayerReader.scala
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/
HBaseCollectionLayerReader.scala
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/*
* Copyright 2016 Azavea
*
* Licensed 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 geotrellis.store.hbase
import geotrellis.layer._
import geotrellis.store._
import geotrellis.store.avro._
import geotrellis.util._
import io.circe._
import scala.reflect._
class HBaseCollectionLayerReader(
val attributeStore: AttributeStore,
instance: HBaseInstance
) extends CollectionLayerReader[LayerId] {
def read[
K: AvroRecordCodec: Boundable: Decoder: ClassTag,
V: AvroRecordCodec: ClassTag,
M: Decoder: Component[*, Bounds[K]]
](id: LayerId, rasterQuery: LayerQuery[K, M], filterIndexOnly: Boolean) = {
if (!attributeStore.layerExists(id)) throw new LayerNotFoundError(id)
val LayerAttributes(header, metadata, keyIndex, writerSchema) = try {
attributeStore.readLayerAttributes[HBaseLayerHeader, M, K](id)
} catch {
case e: AttributeNotFoundError => throw new LayerReadError(id).initCause(e)
}
val queryKeyBounds = rasterQuery(metadata)
val layerMetadata = metadata.setComponent[Bounds[K]](queryKeyBounds.foldLeft(EmptyBounds: Bounds[K])(_ combine _))
val decompose = (bounds: KeyBounds[K]) => keyIndex.indexRanges(bounds)
val seq = HBaseCollectionReader.read[K, V](instance, header.tileTable, id, queryKeyBounds, decompose, filterIndexOnly, Some(writerSchema))
new ContextCollection(seq, layerMetadata)
}
}
object HBaseCollectionLayerReader {
def apply(instance: HBaseInstance): HBaseCollectionLayerReader =
new HBaseCollectionLayerReader(HBaseAttributeStore(instance), instance)
def apply(attributeStore: HBaseAttributeStore): HBaseCollectionLayerReader =
new HBaseCollectionLayerReader(attributeStore, attributeStore.instance)
}