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/*
* Copyright 2004-2023 H2 Group. Multiple-Licensed under the MPL 2.0,
* and the EPL 1.0 (https://h2database.com/html/license.html).
* Initial Developer: H2 Group
*/
package org.h2.value;
import static org.h2.value.ValueToObjectConverter.GEOMETRY_CLASS;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.Reader;
import java.math.BigDecimal;
import java.sql.Array;
import java.sql.Blob;
import java.sql.Clob;
import java.sql.Date;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Time;
import java.sql.Timestamp;
import java.time.Duration;
import java.time.Instant;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.time.OffsetDateTime;
import java.time.OffsetTime;
import java.time.Period;
import java.time.ZonedDateTime;
import java.util.UUID;
import org.h2.api.IntervalQualifier;
import org.h2.engine.Session;
import org.h2.jdbc.JdbcResultSet;
import org.h2.message.DbException;
import org.h2.message.TraceObject;
import org.h2.util.IntervalUtils;
import org.h2.util.JSR310Utils;
import org.h2.util.JdbcUtils;
import org.h2.util.LegacyDateTimeUtils;
import org.h2.util.Utils;
/**
* Data type conversion methods between values and Java objects to use on the
* server side on H2 only.
*/
public final class ValueToObjectConverter2 extends TraceObject {
/**
* Get the type information for the given Java class.
*
* @param clazz
* the Java class
* @return the value type
*/
public static TypeInfo classToType(Class clazz) {
if (clazz == null) {
return TypeInfo.TYPE_NULL;
}
if (clazz.isPrimitive()) {
clazz = Utils.getNonPrimitiveClass(clazz);
}
if (clazz == Void.class) {
return TypeInfo.TYPE_NULL;
} else if (clazz == String.class || clazz == Character.class) {
return TypeInfo.TYPE_VARCHAR;
} else if (clazz == byte[].class) {
return TypeInfo.TYPE_VARBINARY;
} else if (clazz == Boolean.class) {
return TypeInfo.TYPE_BOOLEAN;
} else if (clazz == Byte.class) {
return TypeInfo.TYPE_TINYINT;
} else if (clazz == Short.class) {
return TypeInfo.TYPE_SMALLINT;
} else if (clazz == Integer.class) {
return TypeInfo.TYPE_INTEGER;
} else if (clazz == Long.class) {
return TypeInfo.TYPE_BIGINT;
} else if (clazz == Float.class) {
return TypeInfo.TYPE_REAL;
} else if (clazz == Double.class) {
return TypeInfo.TYPE_DOUBLE;
} else if (clazz == LocalDate.class) {
return TypeInfo.TYPE_DATE;
} else if (clazz == LocalTime.class) {
return TypeInfo.TYPE_TIME;
} else if (clazz == OffsetTime.class) {
return TypeInfo.TYPE_TIME_TZ;
} else if (clazz == LocalDateTime.class) {
return TypeInfo.TYPE_TIMESTAMP;
} else if (clazz == OffsetDateTime.class || clazz == ZonedDateTime.class || clazz == Instant.class) {
return TypeInfo.TYPE_TIMESTAMP_TZ;
} else if (clazz == Period.class) {
return TypeInfo.TYPE_INTERVAL_YEAR_TO_MONTH;
} else if (clazz == Duration.class) {
return TypeInfo.TYPE_INTERVAL_DAY_TO_SECOND;
} else if (UUID.class == clazz) {
return TypeInfo.TYPE_UUID;
} else if (clazz.isArray()) {
return TypeInfo.getTypeInfo(Value.ARRAY, Integer.MAX_VALUE, 0, classToType(clazz.getComponentType()));
} else if (Clob.class.isAssignableFrom(clazz) || Reader.class.isAssignableFrom(clazz)) {
return TypeInfo.TYPE_CLOB;
} else if (Blob.class.isAssignableFrom(clazz) || InputStream.class.isAssignableFrom(clazz)) {
return TypeInfo.TYPE_BLOB;
} else if (BigDecimal.class.isAssignableFrom(clazz)) {
return TypeInfo.TYPE_NUMERIC_FLOATING_POINT;
} else if (GEOMETRY_CLASS != null && GEOMETRY_CLASS.isAssignableFrom(clazz)) {
return TypeInfo.TYPE_GEOMETRY;
} else if (Array.class.isAssignableFrom(clazz)) {
return TypeInfo.TYPE_ARRAY_UNKNOWN;
} else if (ResultSet.class.isAssignableFrom(clazz)) {
return TypeInfo.TYPE_ROW_EMPTY;
} else {
TypeInfo t = LegacyDateTimeUtils.legacyClassToType(clazz);
if (t != null) {
return t;
}
return TypeInfo.TYPE_JAVA_OBJECT;
}
}
/**
* Read a value from the given result set.
*
* @param session
* the session
* @param rs
* the result set
* @param columnIndex
* the column index (1-based)
* @param type
* the data type
* @return the value
*/
public static Value readValue(Session session, ResultSet rs, int columnIndex, int type) {
Value v;
if (rs instanceof JdbcResultSet) {
v = ValueToObjectConverter.readValue(session, (JdbcResultSet) rs, columnIndex);
} else {
try {
v = readValueOther(session, rs, columnIndex, type);
} catch (SQLException e) {
throw DbException.convert(e);
}
}
return v;
}
private static Value readValueOther(Session session, ResultSet rs, int columnIndex, int type)
throws SQLException {
Value v;
switch (type) {
case Value.NULL:
v = ValueNull.INSTANCE;
break;
case Value.CHAR: {
String s = rs.getString(columnIndex);
v = (s == null) ? ValueNull.INSTANCE : ValueChar.get(s);
break;
}
case Value.VARCHAR: {
String s = rs.getString(columnIndex);
v = (s == null) ? ValueNull.INSTANCE : ValueVarchar.get(s, session);
break;
}
case Value.CLOB: {
if (session == null) {
String s = rs.getString(columnIndex);
v = s == null ? ValueNull.INSTANCE : ValueClob.createSmall(s);
} else {
Reader in = rs.getCharacterStream(columnIndex);
v = in == null ? ValueNull.INSTANCE
: session.addTemporaryLob(
session.getDataHandler().getLobStorage().createClob(new BufferedReader(in), -1));
}
break;
}
case Value.VARCHAR_IGNORECASE: {
String s = rs.getString(columnIndex);
v = s == null ? ValueNull.INSTANCE : ValueVarcharIgnoreCase.get(s);
break;
}
case Value.BINARY: {
byte[] bytes = rs.getBytes(columnIndex);
v = bytes == null ? ValueNull.INSTANCE : ValueBinary.getNoCopy(bytes);
break;
}
case Value.VARBINARY: {
byte[] bytes = rs.getBytes(columnIndex);
v = bytes == null ? ValueNull.INSTANCE : ValueVarbinary.getNoCopy(bytes);
break;
}
case Value.BLOB: {
if (session == null) {
byte[] buff = rs.getBytes(columnIndex);
v = buff == null ? ValueNull.INSTANCE : ValueBlob.createSmall(buff);
} else {
InputStream in = rs.getBinaryStream(columnIndex);
v = in == null ? ValueNull.INSTANCE
: session.addTemporaryLob(session.getDataHandler().getLobStorage().createBlob(in, -1));
}
break;
}
case Value.BOOLEAN: {
boolean value = rs.getBoolean(columnIndex);
v = rs.wasNull() ? ValueNull.INSTANCE : ValueBoolean.get(value);
break;
}
case Value.TINYINT: {
byte value = rs.getByte(columnIndex);
v = rs.wasNull() ? ValueNull.INSTANCE : ValueTinyint.get(value);
break;
}
case Value.SMALLINT: {
short value = rs.getShort(columnIndex);
v = rs.wasNull() ? ValueNull.INSTANCE : ValueSmallint.get(value);
break;
}
case Value.INTEGER: {
int value = rs.getInt(columnIndex);
v = rs.wasNull() ? ValueNull.INSTANCE : ValueInteger.get(value);
break;
}
case Value.BIGINT: {
long value = rs.getLong(columnIndex);
v = rs.wasNull() ? ValueNull.INSTANCE : ValueBigint.get(value);
break;
}
case Value.NUMERIC: {
BigDecimal value = rs.getBigDecimal(columnIndex);
v = value == null ? ValueNull.INSTANCE : ValueNumeric.getAnyScale(value);
break;
}
case Value.REAL: {
float value = rs.getFloat(columnIndex);
v = rs.wasNull() ? ValueNull.INSTANCE : ValueReal.get(value);
break;
}
case Value.DOUBLE: {
double value = rs.getDouble(columnIndex);
v = rs.wasNull() ? ValueNull.INSTANCE : ValueDouble.get(value);
break;
}
case Value.DECFLOAT: {
BigDecimal value = rs.getBigDecimal(columnIndex);
v = value == null ? ValueNull.INSTANCE : ValueDecfloat.get(value);
break;
}
case Value.DATE: {
try {
LocalDate value = rs.getObject(columnIndex, LocalDate.class);
v = value == null ? ValueNull.INSTANCE : JSR310Utils.localDateToValue(value);
break;
} catch (SQLException ignore) {
Date value = rs.getDate(columnIndex);
v = value == null ? ValueNull.INSTANCE : LegacyDateTimeUtils.fromDate(session, null, value);
}
break;
}
case Value.TIME: {
try {
LocalTime value = rs.getObject(columnIndex, LocalTime.class);
v = value == null ? ValueNull.INSTANCE : JSR310Utils.localTimeToValue(value);
break;
} catch (SQLException ignore) {
Time value = rs.getTime(columnIndex);
v = value == null ? ValueNull.INSTANCE : LegacyDateTimeUtils.fromTime(session, null, value);
}
break;
}
case Value.TIME_TZ: {
try {
OffsetTime value = rs.getObject(columnIndex, OffsetTime.class);
v = value == null ? ValueNull.INSTANCE : JSR310Utils.offsetTimeToValue(value);
break;
} catch (SQLException ignore) {
Object obj = rs.getObject(columnIndex);
if (obj == null) {
v = ValueNull.INSTANCE;
} else {
v = ValueTimeTimeZone.parse(obj.toString(), session);
}
}
break;
}
case Value.TIMESTAMP: {
try {
LocalDateTime value = rs.getObject(columnIndex, LocalDateTime.class);
v = value == null ? ValueNull.INSTANCE : JSR310Utils.localDateTimeToValue(value);
break;
} catch (SQLException ignore) {
Timestamp value = rs.getTimestamp(columnIndex);
v = value == null ? ValueNull.INSTANCE : LegacyDateTimeUtils.fromTimestamp(session, null, value);
}
break;
}
case Value.TIMESTAMP_TZ: {
try {
OffsetDateTime value = rs.getObject(columnIndex, OffsetDateTime.class);
v = value == null ? ValueNull.INSTANCE : JSR310Utils.offsetDateTimeToValue(value);
break;
} catch (SQLException ignore) {
Object obj = rs.getObject(columnIndex);
if (obj == null) {
v = ValueNull.INSTANCE;
} else if (obj instanceof ZonedDateTime) {
v = JSR310Utils.zonedDateTimeToValue((ZonedDateTime) obj);
} else {
v = ValueTimestampTimeZone.parse(obj.toString(), session);
}
}
break;
}
case Value.INTERVAL_YEAR:
case Value.INTERVAL_MONTH:
case Value.INTERVAL_DAY:
case Value.INTERVAL_HOUR:
case Value.INTERVAL_MINUTE:
case Value.INTERVAL_SECOND:
case Value.INTERVAL_YEAR_TO_MONTH:
case Value.INTERVAL_DAY_TO_HOUR:
case Value.INTERVAL_DAY_TO_MINUTE:
case Value.INTERVAL_DAY_TO_SECOND:
case Value.INTERVAL_HOUR_TO_MINUTE:
case Value.INTERVAL_HOUR_TO_SECOND:
case Value.INTERVAL_MINUTE_TO_SECOND: {
String s = rs.getString(columnIndex);
v = s == null ? ValueNull.INSTANCE
: IntervalUtils.parseFormattedInterval(IntervalQualifier.valueOf(type - Value.INTERVAL_YEAR), s);
break;
}
case Value.JAVA_OBJECT: {
byte[] buff;
try {
buff = rs.getBytes(columnIndex);
} catch (SQLException ignore) {
try {
Object o = rs.getObject(columnIndex);
buff = o != null ? JdbcUtils.serialize(o, session.getJavaObjectSerializer()) : null;
} catch (Exception e) {
throw DbException.convert(e);
}
}
v = buff == null ? ValueNull.INSTANCE : ValueJavaObject.getNoCopy(buff);
break;
}
case Value.ENUM: {
int value = rs.getInt(columnIndex);
v = rs.wasNull() ? ValueNull.INSTANCE : ValueInteger.get(value);
break;
}
case Value.GEOMETRY: {
Object x = rs.getObject(columnIndex);
v = x == null ? ValueNull.INSTANCE : ValueGeometry.getFromGeometry(x);
break;
}
case Value.JSON: {
Object x = rs.getObject(columnIndex);
if (x == null) {
v = ValueNull.INSTANCE;
} else {
Class clazz = x.getClass();
if (clazz == byte[].class) {
v = ValueJson.fromJson((byte[]) x);
} else if (clazz == String.class) {
v = ValueJson.fromJson((String) x);
} else {
v = ValueJson.fromJson(x.toString());
}
}
break;
}
case Value.UUID: {
Object o = rs.getObject(columnIndex);
if (o == null) {
v = ValueNull.INSTANCE;
} else if (o instanceof UUID) {
v = ValueUuid.get((UUID) o);
} else if (o instanceof byte[]) {
v = ValueUuid.get((byte[]) o);
} else {
v = ValueUuid.get((String) o);
}
break;
}
case Value.ARRAY: {
Array array = rs.getArray(columnIndex);
if (array == null) {
v = ValueNull.INSTANCE;
} else {
Object[] list = (Object[]) array.getArray();
if (list == null) {
v = ValueNull.INSTANCE;
} else {
int len = list.length;
Value[] values = new Value[len];
for (int i = 0; i < len; i++) {
values[i] = ValueToObjectConverter.objectToValue(session, list[i], Value.NULL);
}
v = ValueArray.get(values, session);
}
}
break;
}
case Value.ROW: {
Object o = rs.getObject(columnIndex);
if (o == null) {
v = ValueNull.INSTANCE;
} else if (o instanceof ResultSet) {
v = ValueToObjectConverter.resultSetToValue(session, (ResultSet) o);
} else {
Object[] list = (Object[]) o;
int len = list.length;
Value[] values = new Value[len];
for (int i = 0; i < len; i++) {
values[i] = ValueToObjectConverter.objectToValue(session, list[i], Value.NULL);
}
v = ValueRow.get(values);
}
break;
}
default:
throw DbException.getInternalError("data type " + type);
}
return v;
}
private ValueToObjectConverter2() {
}
}