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author | Tarek Auel <tarek.auel@gmail.com> | 2015-06-29 11:57:19 -0700 |
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committer | Davies Liu <davies@databricks.com> | 2015-06-29 11:57:19 -0700 |
commit | a5c2961caaafd751f11bdd406bb6885443d7572e (patch) | |
tree | 8cdb6288d459f82e155e4510baa0a2523a76b6ad /sql/catalyst | |
parent | 3664ee25f0a67de5ba76e9487a55a55216ae589f (diff) | |
download | spark-a5c2961caaafd751f11bdd406bb6885443d7572e.tar.gz spark-a5c2961caaafd751f11bdd406bb6885443d7572e.tar.bz2 spark-a5c2961caaafd751f11bdd406bb6885443d7572e.zip |
[SPARK-8235] [SQL] misc function sha / sha1
Jira: https://issues.apache.org/jira/browse/SPARK-8235
I added the support for sha1. If I understood rxin correctly, sha and sha1 should execute the same algorithm, shouldn't they?
Please take a close look on the Python part. This is adopted from #6934
Author: Tarek Auel <tarek.auel@gmail.com>
Author: Tarek Auel <tarek.auel@googlemail.com>
Closes #6963 from tarekauel/SPARK-8235 and squashes the following commits:
f064563 [Tarek Auel] change to shaHex
7ce3cdc [Tarek Auel] rely on automatic cast
a1251d6 [Tarek Auel] Merge remote-tracking branch 'upstream/master' into SPARK-8235
68eb043 [Tarek Auel] added docstring
be5aff1 [Tarek Auel] improved error message
7336c96 [Tarek Auel] added type check
cf23a80 [Tarek Auel] simplified example
ebf75ef [Tarek Auel] [SPARK-8301] updated the python documentation. Removed sha in python and scala
6d6ff0d [Tarek Auel] [SPARK-8233] added docstring
ea191a9 [Tarek Auel] [SPARK-8233] fixed signatureof python function. Added expected type to misc
e3fd7c3 [Tarek Auel] SPARK[8235] added sha to the list of __all__
e5dad4e [Tarek Auel] SPARK[8235] sha / sha1
Diffstat (limited to 'sql/catalyst')
3 files changed, 39 insertions, 1 deletions
diff --git a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/FunctionRegistry.scala b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/FunctionRegistry.scala index 457948a800..b24064d061 100644 --- a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/FunctionRegistry.scala +++ b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/FunctionRegistry.scala @@ -136,6 +136,8 @@ object FunctionRegistry { // misc functions expression[Md5]("md5"), expression[Sha2]("sha2"), + expression[Sha1]("sha1"), + expression[Sha1]("sha"), // aggregate functions expression[Average]("avg"), diff --git a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/misc.scala b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/misc.scala index e80706fc65..9a39165a1f 100644 --- a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/misc.scala +++ b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/misc.scala @@ -21,8 +21,9 @@ import java.security.MessageDigest import java.security.NoSuchAlgorithmException import org.apache.commons.codec.digest.DigestUtils +import org.apache.spark.sql.catalyst.analysis.TypeCheckResult import org.apache.spark.sql.catalyst.expressions.codegen._ -import org.apache.spark.sql.types.{BinaryType, IntegerType, StringType, DataType} +import org.apache.spark.sql.types._ import org.apache.spark.unsafe.types.UTF8String /** @@ -140,3 +141,30 @@ case class Sha2(left: Expression, right: Expression) """ } } + +/** + * A function that calculates a sha1 hash value and returns it as a hex string + * For input of type [[BinaryType]] or [[StringType]] + */ +case class Sha1(child: Expression) extends UnaryExpression with ExpectsInputTypes { + + override def dataType: DataType = StringType + + override def expectedChildTypes: Seq[DataType] = Seq(BinaryType) + + override def eval(input: InternalRow): Any = { + val value = child.eval(input) + if (value == null) { + null + } else { + UTF8String.fromString(DigestUtils.shaHex(value.asInstanceOf[Array[Byte]])) + } + } + + override def genCode(ctx: CodeGenContext, ev: GeneratedExpressionCode): String = { + defineCodeGen(ctx, ev, c => + "org.apache.spark.unsafe.types.UTF8String.fromString" + + s"(org.apache.commons.codec.digest.DigestUtils.shaHex($c))" + ) + } +} diff --git a/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/MiscFunctionsSuite.scala b/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/MiscFunctionsSuite.scala index 38482c54c6..36e636b5da 100644 --- a/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/MiscFunctionsSuite.scala +++ b/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/MiscFunctionsSuite.scala @@ -31,6 +31,14 @@ class MiscFunctionsSuite extends SparkFunSuite with ExpressionEvalHelper { checkEvaluation(Md5(Literal.create(null, BinaryType)), null) } + test("sha1") { + checkEvaluation(Sha1(Literal("ABC".getBytes)), "3c01bdbb26f358bab27f267924aa2c9a03fcfdb8") + checkEvaluation(Sha1(Literal.create(Array[Byte](1, 2, 3, 4, 5, 6), BinaryType)), + "5d211bad8f4ee70e16c7d343a838fc344a1ed961") + checkEvaluation(Sha1(Literal.create(null, BinaryType)), null) + checkEvaluation(Sha1(Literal("".getBytes)), "da39a3ee5e6b4b0d3255bfef95601890afd80709") + } + test("sha2") { checkEvaluation(Sha2(Literal("ABC".getBytes), Literal(256)), DigestUtils.sha256Hex("ABC")) checkEvaluation(Sha2(Literal.create(Array[Byte](1, 2, 3, 4, 5, 6), BinaryType), Literal(384)), |