org.apache.metamodel.jdbc.dialects

Class ImpalaQueryRewriter

java.lang.Object

org.apache.metamodel.jdbc.dialects.AbstractQueryRewriter

org.apache.metamodel.jdbc.dialects.DefaultQueryRewriter

org.apache.metamodel.jdbc.dialects.LimitOffsetQueryRewriter

org.apache.metamodel.jdbc.dialects.Hive2QueryRewriter

org.apache.metamodel.jdbc.dialects.ImpalaQueryRewriter

All Implemented Interfaces:

IQueryRewriter

public class ImpalaQueryRewriter
extends Hive2QueryRewriter

Query rewriter for Apache Impala Because Impala uses the same metadata store as Hive to record information about table structure and properties， so Impala provides a high degree of compatibility with the Hive Query Language (HiveQL) ;

See Also:

impala.apache.org

Constructor Summary

Constructors

Constructor and Description
ImpalaQueryRewriter(JdbcDataContext dataContext)

Method Summary

Methods inherited from class org.apache.metamodel.jdbc.dialects.Hive2QueryRewriter

isPrimaryKeySupported, isTransactional, rewriteColumnType

Methods inherited from class org.apache.metamodel.jdbc.dialects.LimitOffsetQueryRewriter

isFirstRowSupported, isMaxRowsSupported, rewriteQuery

Methods inherited from class org.apache.metamodel.jdbc.dialects.DefaultQueryRewriter

beforeRewrite, escapeQuotes, isAggregateFunctionSupported, isScalarFunctionSupported, needsQuoting, rewriteFilterItem, rewriteFilterItemWithOperandLiteral, rewriteTimestamp

Methods inherited from class org.apache.metamodel.jdbc.dialects.AbstractQueryRewriter

getColumnType, getDataContext, getResultSetValue, isSchemaIncludedInColumnPaths, isSupportedVersion, rewriteColumnTypeInternal, rewriteFromClause, rewriteFromItem, rewriteFromItem, rewriteGroupByClause, rewriteGroupByItem, rewriteHavingClause, rewriteOrderByClause, rewriteOrderByItem, rewriteSelectClause, rewriteSelectItem, rewriteWhereClause, setStatementParameter, toTime, toTimestamp

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ImpalaQueryRewriter

public ImpalaQueryRewriter(JdbcDataContext dataContext)