Paul Rogers has uploaded this change for review. ( 
http://gerrit.cloudera.org:8080/11953


Change subject: IMPALA-7866: Predicates, helpers for implicit casts, slot refs
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IMPALA-7866: Predicates, helpers for implicit casts, slot refs

* Refactors implicit cast functions into a predicate and a static helper
  rather than the methods on the Expr base class.
* Adds an IS_SLOT_REF predicate and replaces explcit instanceof checks
  with uses of the predicate.
* Other minor clean-up.

Tests: No functional changes, just refactoring. Reran existing tests.

Change-Id: Ieaa0aee1b9015e0aed521f2038bf44513d7f8613
---
M fe/src/main/java/org/apache/impala/analysis/Analyzer.java
M fe/src/main/java/org/apache/impala/analysis/CastExpr.java
M fe/src/main/java/org/apache/impala/analysis/Expr.java
M fe/src/main/java/org/apache/impala/analysis/PartitionSet.java
M fe/src/main/java/org/apache/impala/analysis/QueryStmt.java
M fe/src/main/java/org/apache/impala/analysis/SelectListItem.java
M fe/src/main/java/org/apache/impala/analysis/SelectStmt.java
M fe/src/main/java/org/apache/impala/analysis/SlotRef.java
M fe/src/main/java/org/apache/impala/analysis/SortInfo.java
M fe/src/main/java/org/apache/impala/analysis/StmtRewriter.java
M fe/src/main/java/org/apache/impala/analysis/UnionStmt.java
M fe/src/main/java/org/apache/impala/catalog/AggregateFunction.java
M fe/src/main/java/org/apache/impala/common/TreeNode.java
M fe/src/main/java/org/apache/impala/planner/DataSourceScanNode.java
M fe/src/main/java/org/apache/impala/planner/HdfsPartitionPruner.java
M fe/src/main/java/org/apache/impala/planner/KuduScanNode.java
M fe/src/main/java/org/apache/impala/planner/SingleNodePlanner.java
M fe/src/main/java/org/apache/impala/planner/SortNode.java
M fe/src/main/java/org/apache/impala/rewrite/RemoveRedundantStringCast.java
M fe/src/test/java/org/apache/impala/analysis/AnalyzeStmtsTest.java
20 files changed, 100 insertions(+), 95 deletions(-)



  git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/53/11953/1
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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: newchange
Gerrit-Change-Id: Ieaa0aee1b9015e0aed521f2038bf44513d7f8613
Gerrit-Change-Number: 11953
Gerrit-PatchSet: 1
Gerrit-Owner: Paul Rogers <par0...@yahoo.com>

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