Let jdbc-based connectors control how data should be written and predicates pushed down#109
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findepi merged 7 commits intotrinodb:masterfrom Feb 9, 2019
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Decimal predicate pushdown was not allowed in io.prestosql.plugin.jdbc.QueryBuilder#isAcceptedType and this is why it's retained as not allowed in this refactoring.
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Decimal predicate pushdown was not allowed in io.prestosql.plugin.jdbc.QueryBuilder#isAcceptedType and this is why it's retained as not allowed in this refactoring.
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presto-base-jdbc/src/main/java/io/prestosql/plugin/jdbc/BooleanWriteFunction.java
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presto-base-jdbc/src/main/java/io/prestosql/plugin/jdbc/WriteMapping.java
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presto-base-jdbc/src/main/java/io/prestosql/plugin/jdbc/ColumnMapping.java
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electrum
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I didn't do a complete review but looks good to me
presto-base-jdbc/src/main/java/io/prestosql/plugin/jdbc/StandardColumnMappings.java
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presto-base-jdbc/src/main/java/io/prestosql/plugin/jdbc/JdbcPageSink.java
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presto-base-jdbc/src/main/java/io/prestosql/plugin/jdbc/JdbcPageSink.java
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presto-base-jdbc/src/main/java/io/prestosql/plugin/jdbc/JdbcPageSink.java
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presto-base-jdbc/src/main/java/io/prestosql/plugin/jdbc/WriteMapping.java
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WriteMapping captures how data should be written in a JDBC connector: - what data type should be used in the remote database - how the data should be bound to `PreparedStatement`
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Today, a jdbc-based connector controls how data should be read from a
ResultSetviaReadMappingdefinitions. However, writing is hard-coded inJdbcPageSink#appendColumn.This expands the
ReadMappingconcept intoColumnMappingwhich controls both reading and pushdown.This also introduces separate
WriteMappingconcept which is used for writing (currently both CTAS and INSERT)Ref prestodb/presto#12151