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85 changes: 85 additions & 0 deletions
85
java/spark/src/main/java/com/lancedb/lance/spark/LanceCatalog.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,85 @@ | ||
| /* | ||
| * 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 com.lancedb.lance.spark; | ||
|
|
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| import com.lancedb.lance.spark.internal.LanceDatasetAdapter; | ||
| import com.lancedb.lance.spark.utils.Optional; | ||
| import org.apache.spark.sql.catalyst.analysis.NoSuchNamespaceException; | ||
| import org.apache.spark.sql.catalyst.analysis.NoSuchTableException; | ||
| import org.apache.spark.sql.catalyst.analysis.TableAlreadyExistsException; | ||
| import org.apache.spark.sql.connector.catalog.Identifier; | ||
| import org.apache.spark.sql.connector.catalog.Table; | ||
| import org.apache.spark.sql.connector.catalog.TableCatalog; | ||
| import org.apache.spark.sql.connector.catalog.TableChange; | ||
| import org.apache.spark.sql.connector.expressions.Transform; | ||
| import org.apache.spark.sql.types.StructType; | ||
| import org.apache.spark.sql.util.CaseInsensitiveStringMap; | ||
| import scala.Some; | ||
|
|
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| import java.util.Map; | ||
|
|
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| public class LanceCatalog implements TableCatalog { | ||
| @Override | ||
| public Identifier[] listTables(String[] namespace) throws NoSuchNamespaceException { | ||
| throw new UnsupportedOperationException("Please use lancedb catalog for dataset listing"); | ||
| } | ||
|
|
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| @Override | ||
| public Table loadTable(Identifier ident) throws NoSuchTableException { | ||
| LanceConfig config = LanceConfig.from(ident.name()); | ||
| Optional<StructType> schema = LanceDatasetAdapter.getSchema(ident.name()); | ||
| if (schema.isEmpty()) { | ||
| throw new NoSuchTableException(config.getDbPath(), config.getDatasetName()); | ||
| } | ||
| return new LanceDataset(LanceConfig.from(ident.name()), schema.get()); | ||
| } | ||
|
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| @Override | ||
| public Table createTable(Identifier ident, StructType schema, Transform[] partitions, | ||
| Map<String, String> properties) throws TableAlreadyExistsException, NoSuchNamespaceException { | ||
| try { | ||
| LanceDatasetAdapter.createDataset(ident.name(), schema); | ||
| } catch (IllegalArgumentException e) { | ||
| throw new TableAlreadyExistsException(ident.name(), new Some<>(e)); | ||
| } | ||
| return new LanceDataset(LanceConfig.from(properties, ident.name()), schema); | ||
| } | ||
|
|
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| @Override | ||
| public Table alterTable(Identifier ident, TableChange... changes) throws NoSuchTableException { | ||
| throw new UnsupportedOperationException(); | ||
| } | ||
|
|
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| @Override | ||
| public boolean dropTable(Identifier ident) { | ||
| throw new UnsupportedOperationException(); | ||
| } | ||
|
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| @Override | ||
| public void renameTable(Identifier oldIdent, Identifier newIdent) | ||
| throws NoSuchTableException, TableAlreadyExistsException { | ||
| throw new UnsupportedOperationException(); | ||
| } | ||
|
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| @Override | ||
| public void initialize(String name, CaseInsensitiveStringMap options) { | ||
| // Do nothing here | ||
| } | ||
|
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| @Override | ||
| public String name() { | ||
| return "lance"; | ||
| } | ||
| } |
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