com.lucidera.opt
Class LoptIterCalcRule.JdbcQueryRule

java.lang.Object
  org.eigenbase.relopt.RelOptRule
      com.lucidera.opt.LoptIterCalcRule
          com.lucidera.opt.LoptIterCalcRule.JdbcQueryRule

Enclosing class:

LoptIterCalcRule

private static class LoptIterCalcRule.JdbcQueryRule
extends LoptIterCalcRule

A rule for tagging a calculator on top of a JDBC query

Field Summary

Fields inherited from class com.lucidera.opt.LoptIterCalcRule

CARTESIAN_JOIN_PREFIX, cartesianJoinInstance, defaultInstance, HASH_JOIN_PREFIX, hashJoinInstance, JAVA_UDX_PREFIX, javaUdxInstance, JDBC_QUERY_PREFIX, jdbcQueryInstance, LCS_ROWSCAN_PREFIX, lcsAppendInstance, lcsDeleteInstance, lcsMergeInstance, lcsRowScanInstance, nestedLoopJoinInstance, NLJ_PREFIX, TABLE_ACCESS_PREFIX, TABLE_APPEND_PREFIX, TABLE_DELETE_PREFIX, TABLE_MERGE_PREFIX, tableAccessInstance

Fields inherited from class org.eigenbase.relopt.RelOptRule

ANY, description, operands

Constructor Summary

LoptIterCalcRule.JdbcQueryRule(RelOptRuleOperand operand)

Method Summary

void	onMatch(RelOptRuleCall call) Receives notification about a rule match.

Methods inherited from class com.lucidera.opt.LoptIterCalcRule

getDefaultTag, getTableTag, replaceTag, replaceTagAsFennel, setIterCalcTypeMap, transformToTag

Methods inherited from class org.eigenbase.relopt.RelOptRule

convert, equals, equals, getOperand, getOperands, getOutConvention, getOutTrait, hashCode, matches, mergeTraitsAndConvert, mergeTraitsAndConvert, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

LoptIterCalcRule.JdbcQueryRule

public LoptIterCalcRule.JdbcQueryRule(RelOptRuleOperand operand)

Method Detail

onMatch

public void onMatch(RelOptRuleCall call)

Description copied from class: RelOptRule

Receives notification about a rule match. At the time that this method is called, call.rels holds the set of relational expressions which match the operands to the rule; call.rels[0] is the root expression.

Typically a rule would check that the nodes are valid matches, creates a new expression, then calls back RelOptRuleCall.transformTo(org.eigenbase.rel.RelNode) to register the expression.

Specified by:

onMatch in class RelOptRule

Parameters:

call - Rule call

See Also:

RelOptRule.matches(RelOptRuleCall)