org.h2.value

Class ValueResultSet

java.lang.Object

org.h2.value.VersionedValue

org.h2.value.Value

org.h2.value.ValueResultSet

public class ValueResultSet
extends Value

Implementation of the RESULT_SET data type.

Field Summary

Fields inherited from class org.h2.value.Value

ARRAY, BLOB, BOOLEAN, BYTE, BYTES, CLOB, DATE, DECIMAL, DOUBLE, ENUM, FLOAT, GEOMETRY, INT, INTERVAL_DAY, INTERVAL_DAY_TO_HOUR, INTERVAL_DAY_TO_MINUTE, INTERVAL_DAY_TO_SECOND, INTERVAL_HOUR, INTERVAL_HOUR_TO_MINUTE, INTERVAL_HOUR_TO_SECOND, INTERVAL_MINUTE, INTERVAL_MINUTE_TO_SECOND, INTERVAL_MONTH, INTERVAL_SECOND, INTERVAL_YEAR, INTERVAL_YEAR_TO_MONTH, JAVA_OBJECT, LONG, MIN_LONG_DECIMAL, NULL, RESULT_SET, ROW, SHORT, STRING, STRING_FIXED, STRING_IGNORECASE, TIME, TIMESTAMP, TIMESTAMP_TZ, TYPE_COUNT, UNKNOWN, UUID

Fields inherited from class org.h2.value.VersionedValue

DUMMY

Method Summary

Methods

Modifier and Type	Method and Description
int	compareTypeSafe(Value v, CompareMode mode) Compare this value against another value given that the values are of the same data type.
Value	convertPrecision(long precision, boolean force) Convert the precision to the requested value.
boolean	equals(java.lang.Object other) Check if the two values have the same hash code.
static ValueResultSet	get(ResultInterface result, int maxrows) Create a result set value for the given result.
static ValueResultSet	get(SessionInterface session, java.sql.ResultSet rs, int maxrows) Create a result set value for the given result set.
static ValueResultSet	get(SimpleResult result) Create a result set value.
int	getMemory() Get the memory used by this object.
java.lang.Object	getObject() Get the value as an object.
ResultInterface	getResult() Returns result for result set value, or single-row result with this value in column X for other values.
java.lang.StringBuilder	getSQL(java.lang.StringBuilder builder) Appends the SQL expression for this value to the specified builder.
java.lang.String	getString() Get the value as a string.
TypeInfo	getType() Returns the data type.
int	getValueType() Get the value type.
int	hashCode()
void	set(java.sql.PreparedStatement prep, int parameterIndex) Set the value as a parameter in a prepared statement.

Methods inherited from class org.h2.value.Value

add, checkPrecision, clearCache, compareTo, compareWithNull, containsNull, convertScale, convertTo, convertTo, convertTo, convertTo, convertToInt, copy, copyToResult, copyToTemp, divide, getBigDecimal, getBoolean, getByte, getBytes, getBytesNoCopy, getDataHandler, getDate, getDouble, getFloat, getHigherOrder, getHigherType, getInputStream, getInputStream, getInt, getLong, getReader, getReader, getShort, getSignum, getSmall, getSQL, getTableId, getTime, getTimestamp, getTraceSQL, getUnsupportedExceptionForOperation, isLinkedToTable, modulus, multiply, negate, remove, subtract, toString

Methods inherited from class org.h2.value.VersionedValue

getCommittedValue, getCurrentValue, getOperationId, isCommitted

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Method Detail

get

public static ValueResultSet get(SimpleResult result)

Create a result set value.

Parameters:

result - the result

Returns:

the value

get

public static ValueResultSet get(SessionInterface session,
                 java.sql.ResultSet rs,
                 int maxrows)

Create a result set value for the given result set. The result set will be fully read in memory. The original result set is not closed.

Parameters:

session - the session

rs - the result set

maxrows - the maximum number of rows to read (0 to just read the meta data)

Returns:

the value

get

public static ValueResultSet get(ResultInterface result,
                 int maxrows)

Create a result set value for the given result. The result will be fully read in memory. The original result is not closed.

Parameters:

result - result

maxrows - the maximum number of rows to read (0 to just read the meta data)

Returns:

the value

getType

public TypeInfo getType()

Description copied from class: Value

Returns the data type.

Specified by:

getType in class Value

Returns:

the data type

getValueType

public int getValueType()

Description copied from class: Value

Get the value type.

Specified by:

getValueType in class Value

Returns:

the value type

getMemory

public int getMemory()

Description copied from class: Value

Get the memory used by this object.

Overrides:

getMemory in class Value

Returns:

the memory used in bytes

getString

public java.lang.String getString()

Description copied from class: Value

Get the value as a string.

Specified by:

getString in class Value

Returns:

the string

compareTypeSafe

public int compareTypeSafe(Value v,
                  CompareMode mode)

Description copied from class: Value

Compare this value against another value given that the values are of the same data type.

Specified by:

compareTypeSafe in class Value

Parameters:

v - the other value

mode - the compare mode

Returns:

0 if both values are equal, -1 if the other value is smaller, and 1 otherwise

equals

public boolean equals(java.lang.Object other)

Description copied from class: Value

Check if the two values have the same hash code. No data conversion is made; this method returns false if the other object is not of the same class. For some values, compareTo may return 0 even if equals return false. Example: ValueDecimal 0.0 and 0.00.

Specified by:

equals in class Value

Parameters:

other - the other value

Returns:

true if they are equal

hashCode

public int hashCode()

Specified by:

hashCode in class Value

getObject

public java.lang.Object getObject()

Description copied from class: Value

Get the value as an object.

Specified by:

getObject in class Value

Returns:

the object

getResult

public ResultInterface getResult()

Description copied from class: Value

Returns result for result set value, or single-row result with this value in column X for other values.

Overrides:

getResult in class Value

Returns:

result

set

public void set(java.sql.PreparedStatement prep,
       int parameterIndex)

Description copied from class: Value

Set the value as a parameter in a prepared statement.

Specified by:

set in class Value

Parameters:

prep - the prepared statement

parameterIndex - the parameter index

getSQL

public java.lang.StringBuilder getSQL(java.lang.StringBuilder builder)

Description copied from class: Value

Appends the SQL expression for this value to the specified builder.

Specified by:

getSQL in class Value

Parameters:

builder - string builder

Returns:

the specified string builder

convertPrecision

public Value convertPrecision(long precision,
                     boolean force)

Description copied from class: Value

Convert the precision to the requested value. The precision of the returned value may be somewhat larger than requested, because values with a fixed precision are not truncated.

Overrides:

convertPrecision in class Value

Parameters:

precision - the new precision

force - true if losing numeric precision is allowed

Returns:

the new value