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java.lang.Object org.apache.hadoop.hive.ql.exec.vector.expressions.VectorExpressionWriterFactory
public final class VectorExpressionWriterFactory
VectorExpressionWritableFactory helper class for generating VectorExpressionWritable objects.
Nested Class Summary | |
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static interface |
VectorExpressionWriterFactory.ListOIDClosure
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static interface |
VectorExpressionWriterFactory.SingleOIDClosure
A poor man Java closure. |
Constructor Summary | |
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VectorExpressionWriterFactory()
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Method Summary | |
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static VectorExpressionWriter |
genVectorExpressionWritable(ExprNodeDesc nodeDesc)
Compiles the appropriate vector expression writer based on an expression info (ExprNodeDesc) |
static VectorExpressionWriter |
genVectorExpressionWritable(ObjectInspector fieldObjInspector)
Compiles the appropriate vector expression writer based on an expression info (ExprNodeDesc) |
static VectorExpressionWriter[] |
getExpressionWriters(List<ExprNodeDesc> nodesDesc)
Helper function to create an array of writers from a list of expression descriptors. |
static VectorExpressionWriter[] |
getExpressionWriters(StructObjectInspector objInspector)
Returns VectorExpressionWriter objects for the fields in the given
object inspector. |
static VectorExpressionWriter[] |
getSettableExpressionWriters(SettableStructObjectInspector objInspector)
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static void |
processVectorExpressions(List<ExprNodeDesc> nodesDesc,
List<String> columnNames,
VectorExpressionWriterFactory.SingleOIDClosure closure)
Creates the value writers for a column vector expression list. |
static void |
processVectorExpressions(List<ExprNodeDesc> nodesDesc,
VectorExpressionWriterFactory.ListOIDClosure closure)
Creates the value writers for a column vector expression list. |
Methods inherited from class java.lang.Object |
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equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public VectorExpressionWriterFactory()
Method Detail |
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public static VectorExpressionWriter genVectorExpressionWritable(ExprNodeDesc nodeDesc) throws HiveException
HiveException
public static VectorExpressionWriter genVectorExpressionWritable(ObjectInspector fieldObjInspector) throws HiveException
HiveException
public static VectorExpressionWriter[] getExpressionWriters(List<ExprNodeDesc> nodesDesc) throws HiveException
HiveException
public static void processVectorExpressions(List<ExprNodeDesc> nodesDesc, List<String> columnNames, VectorExpressionWriterFactory.SingleOIDClosure closure) throws HiveException
HiveException
public static void processVectorExpressions(List<ExprNodeDesc> nodesDesc, VectorExpressionWriterFactory.ListOIDClosure closure) throws HiveException
HiveException
public static VectorExpressionWriter[] getExpressionWriters(StructObjectInspector objInspector) throws HiveException
VectorExpressionWriter
objects for the fields in the given
object inspector.
objInspector
-
HiveException
public static VectorExpressionWriter[] getSettableExpressionWriters(SettableStructObjectInspector objInspector) throws HiveException
HiveException
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