org.apache.expreval.expr
Class GenericExpression

java.lang.Object
  org.apache.expreval.expr.GenericExpression

All Implemented Interfaces:

Serializable, GenericValue

Direct Known Subclasses:

BooleanNot, DelegateStmt, GenericCompare, GenericFunction

public abstract class GenericExpression
extends Object
implements GenericValue

See Also:

Serialized Form

Field Summary

Fields inherited from interface org.apache.expreval.expr.node.GenericValue

serialVersionUID

Constructor Summary

protected	GenericExpression(ExpressionType type, GenericValue... exprs)
protected	GenericExpression(ExpressionType type, GenericValue expr, List<GenericValue> genericValueList)
protected	GenericExpression(ExpressionType type, List<GenericValue> genericValueList)

Method Summary

void	applyResultToAggregateValue(AggregateValue aggregateValue, org.apache.hadoop.hbase.client.Result result)
String	asString()
protected Object	getConstantValue(int pos)
GenericValue	getExprArg(int i)
protected MultipleExpressionContext	getExpressionContext()
org.apache.hadoop.hbase.filter.Filter	getFilter()
protected Class<? extends GenericValue>	getGenericValueClass(Class<? extends GenericValue> clazz)
List<GenericValue>	getGenericValueList()
String	getInvalidTypeMsg(Class<? extends GenericValue>... classes)
GenericValue	getOptimizedValue()
protected List<GenericValue>	getSubArgs(int i)
protected FunctionTypeSignature	getTypeSignature()
protected Number	getValueWithCast(double result)
protected Number	getValueWithCast(long result)
boolean	hasAColumnReference()
void	initAggregateValue(AggregateValue aggregateValue)
boolean	isAColumnReference()
boolean	isAConstant()
boolean	isAnAggregateValue()
boolean	isDefaultKeyword()
protected org.apache.hadoop.hbase.filter.Filter	newSingleColumnValueFilter(ColumnAttrib attrib, org.apache.hadoop.hbase.filter.CompareFilter.CompareOp compareOp, org.apache.hadoop.hbase.filter.WritableByteArrayComparable comparator)
protected void	optimizeAllArgs()
void	reset()
void	setArg(int i, GenericValue val)
void	setExpressionContext(MultipleExpressionContext expressionContext)
protected boolean	useDecimal()
protected Class	validateNumericArgTypes(Object... objs)
protected Class<? extends GenericValue>	validateNumericTypes()
void	validateParentClass(Class<? extends GenericValue> parentClass, Class<? extends GenericValue>... childrenClasses)
Class<? extends GenericValue>	validateTypes(GenericValue parentExpr, boolean allowCollections)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.expreval.expr.node.GenericValue

getValue

Constructor Detail

GenericExpression

protected GenericExpression(ExpressionType type,
                            GenericValue... exprs)

GenericExpression

protected GenericExpression(ExpressionType type,
                            List<GenericValue> genericValueList)

GenericExpression

protected GenericExpression(ExpressionType type,
                            GenericValue expr,
                            List<GenericValue> genericValueList)

Method Detail

getTypeSignature

protected FunctionTypeSignature getTypeSignature()

getGenericValueList

public List<GenericValue> getGenericValueList()

getSubArgs

protected List<GenericValue> getSubArgs(int i)

useDecimal

protected boolean useDecimal()

getValueWithCast

protected Number getValueWithCast(long result)
                           throws HBqlException

Throws:

HBqlException

getValueWithCast

protected Number getValueWithCast(double result)
                           throws HBqlException

Throws:

HBqlException

validateNumericArgTypes

protected Class validateNumericArgTypes(Object... objs)

validateNumericTypes

protected Class<? extends GenericValue> validateNumericTypes()
                                                      throws HBqlException

Throws:

HBqlException

isAConstant

public boolean isAConstant()

Specified by:

isAConstant in interface GenericValue

isDefaultKeyword

public boolean isDefaultKeyword()

Specified by:

isDefaultKeyword in interface GenericValue

isAnAggregateValue

public boolean isAnAggregateValue()

Specified by:

isAnAggregateValue in interface GenericValue

initAggregateValue

public void initAggregateValue(AggregateValue aggregateValue)
                        throws HBqlException

Specified by:

initAggregateValue in interface GenericValue

Throws:

HBqlException

applyResultToAggregateValue

public void applyResultToAggregateValue(AggregateValue aggregateValue,
                                        org.apache.hadoop.hbase.client.Result result)
                                 throws HBqlException,
                                        ResultMissingColumnException,
                                        NullColumnValueException

Specified by:

applyResultToAggregateValue in interface GenericValue

Throws:

HBqlException

ResultMissingColumnException

NullColumnValueException

hasAColumnReference

public boolean hasAColumnReference()

Specified by:

hasAColumnReference in interface GenericValue

isAColumnReference

public boolean isAColumnReference()

Specified by:

isAColumnReference in interface GenericValue

reset

public void reset()

Specified by:

reset in interface GenericValue

setExpressionContext

public void setExpressionContext(MultipleExpressionContext expressionContext)
                          throws HBqlException

Specified by:

setExpressionContext in interface GenericValue

Throws:

HBqlException

getExpressionContext

protected MultipleExpressionContext getExpressionContext()

optimizeAllArgs

protected void optimizeAllArgs()
                        throws HBqlException

Throws:

HBqlException

newSingleColumnValueFilter

protected org.apache.hadoop.hbase.filter.Filter newSingleColumnValueFilter(ColumnAttrib attrib,
                                                                           org.apache.hadoop.hbase.filter.CompareFilter.CompareOp compareOp,
                                                                           org.apache.hadoop.hbase.filter.WritableByteArrayComparable comparator)
                                                                    throws HBqlException

Throws:

HBqlException

getConstantValue

protected Object getConstantValue(int pos)
                           throws HBqlException

Throws:

HBqlException

getExprArg

public GenericValue getExprArg(int i)

setArg

public void setArg(int i,
                   GenericValue val)

validateTypes

public Class<? extends GenericValue> validateTypes(GenericValue parentExpr,
                                                   boolean allowCollections)
                                            throws HBqlException

Specified by:

validateTypes in interface GenericValue

Throws:

HBqlException

getOptimizedValue

public GenericValue getOptimizedValue()
                               throws HBqlException

Specified by:

getOptimizedValue in interface GenericValue

Throws:

HBqlException

asString

public String asString()

Specified by:

asString in interface GenericValue

validateParentClass

public void validateParentClass(Class<? extends GenericValue> parentClass,
                                Class<? extends GenericValue>... childrenClasses)
                         throws InvalidTypeException

Throws:

InvalidTypeException

getInvalidTypeMsg

public String getInvalidTypeMsg(Class<? extends GenericValue>... classes)

getGenericValueClass

protected Class<? extends GenericValue> getGenericValueClass(Class<? extends GenericValue> clazz)
                                                      throws InvalidTypeException

Throws:

InvalidTypeException

getFilter

public org.apache.hadoop.hbase.filter.Filter getFilter()
                                                throws HBqlException

Specified by:

getFilter in interface GenericValue

Throws:

HBqlException