Package herddb.utils

Interface SQLRecordPredicateFunctions

public interface SQLRecordPredicateFunctions

Predicate expressed using SQL syntax

Author:

enrico.olivelli

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static class	SQLRecordPredicateFunctions.CompareResult

Method Summary

Static Methods

Modifier and Type	Method	Description
static Object	add(Object a, Object b)
static int	compare(Object a, Object b)	Compare two values, NULL are greater than all other values and NULL == NULL.
static SQLRecordPredicateFunctions.CompareResult	compareConsiderNull(Object a, Object b)	Compare two values, reporting special cases about NULL.
static int	compareFloatArrays(float[] arr1, float[] arr2)
static int	compareNullTo(Object b)
static Pattern	compileLikePattern(String b, char escapeChar)
static Object	divide(Object a, Object b)
static boolean	like(Object a, Object b, char escape)
static boolean	matches(Object a, Pattern pattern)
static Object	modulo(Object a, Object b)
static Object	multiply(Object a, Object b)
static boolean	objectEquals(Object a, Object b)
static boolean	objectNotEquals(Object a, Object b)
static Object	subtract(Object a, Object b)
static boolean	toBoolean(Object result)

Method Detail

toBoolean

static boolean toBoolean(Object result)

compareNullTo

static int compareNullTo(Object b)

compareConsiderNull

static SQLRecordPredicateFunctions.CompareResult compareConsiderNull(Object a,
                                                                     Object b)

Compare two values, reporting special cases about NULL. NULL is not greater or minor than any other value and NULL is not equal to NULL.

Parameters:

a -

b -

Returns:

the outcome of the comparation.

See Also:

compare(java.lang.Object, java.lang.Object)

compareFloatArrays

static int compareFloatArrays(float[] arr1,
                              float[] arr2)

compare

static int compare(Object a,
                   Object b)

Compare two values, NULL are greater than all other values and NULL == NULL. It follows the general contract of Comparator

Parameters:

a -

b -

Returns:

1 if a is greater than b, 0 if they are equals to each other and -1 if a is minor than b

See Also:

compareConsiderNull(java.lang.Object, java.lang.Object)

add

static Object add(Object a,
                  Object b)
           throws IllegalArgumentException

Throws:

IllegalArgumentException

modulo

static Object modulo(Object a,
                     Object b)
              throws IllegalArgumentException

Throws:

IllegalArgumentException

subtract

static Object subtract(Object a,
                       Object b)
                throws IllegalArgumentException

Throws:

IllegalArgumentException

multiply

static Object multiply(Object a,
                       Object b)
                throws IllegalArgumentException

Throws:

IllegalArgumentException

divide

static Object divide(Object a,
                     Object b)
              throws IllegalArgumentException

Throws:

IllegalArgumentException

objectEquals

static boolean objectEquals(Object a,
                            Object b)

objectNotEquals

static boolean objectNotEquals(Object a,
                               Object b)

compileLikePattern

static Pattern compileLikePattern(String b,
                                  char escapeChar)
                           throws HerdDBInternalException

Throws:

HerdDBInternalException

like

static boolean like(Object a,
                    Object b,
                    char escape)

matches

static boolean matches(Object a,
                       Pattern pattern)