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to simplify adding table functions, we are not tightly coupled with concrete table connector function implementations in GlobalSystemConnector and GlobalFunctionCatalog now.
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43 changes: 43 additions & 0 deletions
43
core/trino-main/src/main/java/io/trino/metadata/TableFunctionProvider.java
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/* | ||
* 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 io.trino.metadata; | ||
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import io.trino.spi.connector.ConnectorSplitSource; | ||
import io.trino.spi.function.table.ConnectorTableFunctionHandle; | ||
import io.trino.spi.function.table.TableFunctionProcessorProvider; | ||
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import java.util.Optional; | ||
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public interface TableFunctionProvider | ||
{ | ||
/** | ||
* Provides specific TableFunction | ||
* with TableFunctionProcessorProvider and ConnectorSplitSource implementation | ||
* for concrete function handle | ||
*/ | ||
Optional<TableFunction> get(ConnectorTableFunctionHandle functionHandle); | ||
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interface TableFunction | ||
{ | ||
default TableFunctionProcessorProvider getTableFunctionProcessorProvider() | ||
{ | ||
throw new UnsupportedOperationException("%s does not provide table function processor provider".formatted(getClass().getName())); | ||
} | ||
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default ConnectorSplitSource getSplitSource() | ||
{ | ||
throw new UnsupportedOperationException("%s does not provide connector split source".formatted(getClass().getName())); | ||
} | ||
} | ||
} |
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