import org.apache.calcite.sql2rel.StandardConvertletTable; //导入依赖的package包/类
private Planner buildPlanner(QueryContext context) {
  final List<RelTraitDef> traitDefs = new ArrayList<RelTraitDef>();
  traitDefs.add(ConventionTraitDef.INSTANCE);
  traitDefs.add(RelCollationTraitDef.INSTANCE);
  final ChainedSqlOperatorTable opTab =
      new ChainedSqlOperatorTable(
          ImmutableList.of(SqlStdOperatorTable.instance(),
              HiveSqlOperatorTable.instance(), catalogReader));
  FrameworkConfig config = Frameworks.newConfigBuilder() //
      .parserConfig(SqlParser.configBuilder()
          .setQuotedCasing(Casing.UNCHANGED)
          .setUnquotedCasing(Casing.TO_UPPER)
          .setQuoting(Quoting.DOUBLE_QUOTE)
          .build()) //
      .defaultSchema(context.getDefaultSchema()) //
      .operatorTable(opTab) //
      .traitDefs(traitDefs) //
      .convertletTable(StandardConvertletTable.INSTANCE)//
      .programs(getPrograms()) //
      .typeSystem(RelDataTypeSystem.DEFAULT) //
      .build();
  return Frameworks.getPlanner(config);
}
 

import org.apache.calcite.sql2rel.StandardConvertletTable; //导入依赖的package包/类
@Override
public SqlRexConvertlet get(SqlCall call) {
  SqlRexConvertlet convertlet;
  if(call.getOperator() instanceof DrillCalciteSqlWrapper) {
    final SqlOperator wrapper = call.getOperator();
    final SqlOperator wrapped = DrillCalciteWrapperUtility.extractSqlOperatorFromWrapper(call.getOperator());
    if ((convertlet = map.get(wrapped)) != null) {
      return convertlet;
    }

    ((SqlBasicCall) call).setOperator(wrapped);
    SqlRexConvertlet sqlRexConvertlet = StandardConvertletTable.INSTANCE.get(call);
    ((SqlBasicCall) call).setOperator(wrapper);
    return sqlRexConvertlet;
  }

  if ((convertlet = map.get(call.getOperator())) != null) {
    return convertlet;
  }

  return StandardConvertletTable.INSTANCE.get(call);
}
 

import org.apache.calcite.sql2rel.StandardConvertletTable; //导入依赖的package包/类
protected SqlToRelConverter createSqlToRelConverter(
    final SqlValidator validator,
    final Prepare.CatalogReader catalogReader,
    final RelDataTypeFactory typeFactory,
    final SqlToRelConverter.Config config) {
  final RexBuilder rexBuilder = new RexBuilder(typeFactory);
  RelOptCluster cluster =
      RelOptCluster.create(getPlanner(), rexBuilder);
  if (clusterFactory != null) {
    cluster = clusterFactory.apply(cluster);
  }
  return new SqlToRelConverter(null, validator, catalogReader, cluster,
      StandardConvertletTable.INSTANCE, config);
}
 

import org.apache.calcite.sql2rel.StandardConvertletTable; //导入依赖的package包/类
@Override
public SqlRexConvertlet get(SqlCall call) {

  SqlRexConvertlet convertlet;

  if ((convertlet = map.get(call.getOperator())) != null) {
    return convertlet;
  }

  return StandardConvertletTable.INSTANCE.get(call);
}
 

import org.apache.calcite.sql2rel.StandardConvertletTable; //导入依赖的package包/类
@Override
public SqlRexConvertlet get(SqlCall call) {
  SqlRexConvertlet convertlet;

  if ((convertlet = super.get(call)) != null) {
    return convertlet;
  }

  return StandardConvertletTable.INSTANCE.get(call);
}
 

import org.apache.calcite.sql2rel.StandardConvertletTable; //导入依赖的package包/类
/** Factory method for default convertlet table. */
protected SqlRexConvertletTable createConvertletTable() {
  return StandardConvertletTable.INSTANCE;
}