Package org.apache.drill.exec.store.ischema

Class InfoSchemaFilter

java.lang.Object

org.apache.drill.exec.store.ischema.InfoSchemaFilter

public class InfoSchemaFilter
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	InfoSchemaFilter.ConstantExprNode
static class	InfoSchemaFilter.ExprNode
static class	InfoSchemaFilter.FieldExprNode
static class	InfoSchemaFilter.FunctionExprNode
static enum	InfoSchemaFilter.Result

Constructor Summary

Constructors

Constructor	Description
InfoSchemaFilter(InfoSchemaFilter.ExprNode exprRoot)

Method Summary

Modifier and Type	Method	Description
InfoSchemaFilter.Result	evaluate(Map<String,String> recordValues)	Evaluate the filter for given <COLUMN NAME, VALUE> pairs.
InfoSchemaFilter.Result	evaluate(Map<String,String> recordValues, boolean prefixMatchesInconclusive)	Evaluate the filter for given <COLUMN NAME, VALUE> pairs.
InfoSchemaFilter.ExprNode	getExprRoot()
String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details

InfoSchemaFilter

public InfoSchemaFilter(InfoSchemaFilter.ExprNode exprRoot)

Method Details

getExprRoot

public InfoSchemaFilter.ExprNode getExprRoot()

evaluate

public InfoSchemaFilter.Result evaluate(Map<String,String> recordValues)

Evaluate the filter for given <COLUMN NAME, VALUE> pairs.

Parameters:

recordValues - map of field names and their values

Returns:

evaluation result

evaluate

public InfoSchemaFilter.Result evaluate(Map<String,String> recordValues,
 boolean prefixMatchesInconclusive)

Evaluate the filter for given <COLUMN NAME, VALUE> pairs.

Parameters:

recordValues - map of field names and their values

prefixMatchesInconclusive - whether a prefix match between a schema path and a filter value results in Result.INCONCLUSIVE. Used for pruning the schema search tree, e.g. "dfs" need not be recursed to find a schema of "cp.default"

Returns:

evaluation result

toString

public String toString()

Overrides:

toString in class Object