org.h2.value

Class ValueToObjectConverter

java.lang.Object

org.h2.message.TraceObject

org.h2.value.ValueToObjectConverter

public final class ValueToObjectConverter
extends TraceObject

Data type conversion methods between values and Java objects.

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.Class<?>	GEOMETRY_CLASS The Geometry class.

Fields inherited from class org.h2.message.TraceObject

ARRAY, BLOB, CALLABLE_STATEMENT, CLOB, CONNECTION, DATA_SOURCE, DATABASE_META_DATA, PARAMETER_META_DATA, PREPARED_STATEMENT, RESULT_SET, RESULT_SET_META_DATA, SAVEPOINT, SQLXML, STATEMENT, trace, XA_DATA_SOURCE, XID

Method Summary

Modifier and Type	Method and Description
static java.lang.Class<?>	getDefaultClass(int type, boolean forJdbc) Get the name of the Java class for the given value type.
static Value	objectToValue(Session session, java.lang.Object x, int type) Convert a Java object to a value.
static Value	readValue(Session session, JdbcResultSet rs, int columnIndex) Read a value from the given result set.
static java.lang.Object	valueToDefaultArray(Value value, JdbcConnection conn, boolean forJdbc) Converts the specified array value to array of default Java objects for its type.
static java.lang.Object	valueToDefaultObject(Value value, JdbcConnection conn, boolean forJdbc) Converts the specified value to the default Java object for its type.
static <T> T	valueToObject(java.lang.Class<T> type, Value value, JdbcConnection conn) Converts the specified value to an object of the specified type.

Methods inherited from class org.h2.message.TraceObject

debugCode, debugCodeAssign, debugCodeCall, debugCodeCall, debugCodeCall, getNextId, getTraceId, getTraceObjectName, isDebugEnabled, isInfoEnabled, logAndConvert, quote, quoteArray, quoteBigDecimal, quoteBytes, quoteDate, quoteIntArray, quoteMap, quoteTime, quoteTimestamp, setTrace, unsupported

Methods inherited from class java.lang.Object

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

Field Detail

GEOMETRY_CLASS

public static final java.lang.Class<?> GEOMETRY_CLASS

The Geometry class. This object is null if the JTS jar file is not in the classpath.

Method Detail

objectToValue

public static Value objectToValue(Session session,
                                  java.lang.Object x,
                                  int type)

Convert a Java object to a value.

Parameters:

session - the session

x - the value

type - the suggested value type, or Value#UNKNOWN

Returns:

the value

valueToObject

public static <T> T valueToObject(java.lang.Class<T> type,
                                  Value value,
                                  JdbcConnection conn)

Converts the specified value to an object of the specified type.

Type Parameters:

T - the type

Parameters:

type - the class

value - the value

conn - the connection

Returns:

the object of the specified class representing the specified value, or null

getDefaultClass

public static java.lang.Class<?> getDefaultClass(int type,
                                                 boolean forJdbc)

Get the name of the Java class for the given value type.

Parameters:

type - the value type

forJdbc - if true get class for JDBC layer, if false get class for Java functions API

Returns:

the class

valueToDefaultObject

public static java.lang.Object valueToDefaultObject(Value value,
                                                    JdbcConnection conn,
                                                    boolean forJdbc)

Converts the specified value to the default Java object for its type.

Parameters:

value - the value

conn - the connection

forJdbc - if true perform conversion for JDBC layer, if false perform conversion for Java functions API

Returns:

the object

valueToDefaultArray

public static java.lang.Object valueToDefaultArray(Value value,
                                                   JdbcConnection conn,
                                                   boolean forJdbc)

Converts the specified array value to array of default Java objects for its type.

Parameters:

value - the array value

conn - the connection

forJdbc - if true perform conversion for JDBC layer, if false perform conversion for Java functions API

Returns:

the object

readValue

public static Value readValue(Session session,
                              JdbcResultSet rs,
                              int columnIndex)

Read a value from the given result set.

Parameters:

session - the session

rs - the result set

columnIndex - the column index (1-based)

Returns:

the value