com.sleepycat.persist.impl.RawAbstractInput Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of je Show documentation
Show all versions of je Show documentation
Berkeley DB Java Edition is a open source, transactional storage solution for Java applications. The Direct Persistence Layer (DPL) API is faster and easier to develop, deploy, and manage than serialized object files or ORM-based Java persistence solutions. The Collections API enhances the standard java.util.collections classes allowing them to be persisted to a local file system and accessed concurrently while protected by ACID transactions. Data is stored by serializing objects and managing class and instance data separately so as not to waste space. Berkeley DB Java Edition is the reliable drop-in solution for complex, fast, and scalable storage. Source for this release is in 'je-4.0.92-sources.jar', the Javadoc is located at 'http://download.oracle.com/berkeley-db/docs/je/4.0.92/'.
/*-
* Copyright (C) 2002, 2018, Oracle and/or its affiliates. All rights reserved.
*
* This file was distributed by Oracle as part of a version of Oracle Berkeley
* DB Java Edition made available at:
*
* http://www.oracle.com/technetwork/database/database-technologies/berkeleydb/downloads/index.html
*
* Please see the LICENSE file included in the top-level directory of the
* appropriate version of Oracle Berkeley DB Java Edition for a copy of the
* license and additional information.
*/
package com.sleepycat.persist.impl;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.util.IdentityHashMap;
import com.sleepycat.compat.DbCompat;
import com.sleepycat.persist.raw.RawObject;
/**
* Base class for EntityInput implementations that type-check RawObject
* instances and convert them to regular persistent objects, via the
* Format.convertRawObject method.
*
* The subclass implements readNext which should call checkAndConvert before
* returning the final value.
*
* @author Mark Hayes
*/
abstract class RawAbstractInput extends AbstractInput {
private IdentityHashMap converted;
RawAbstractInput(Catalog catalog,
boolean rawAccess,
IdentityHashMap converted) {
super(catalog, rawAccess);
this.converted = converted;
}
public Object readObject()
throws RefreshException {
return readNext();
}
public Object readKeyObject(Format format)
throws RefreshException {
return readNext();
}
public Object readStringObject()
throws RefreshException {
return readNext();
}
public void registerPriKeyObject(Object o) {
}
public void registerPriStringKeyObject(Object o) {
}
public int readArrayLength() {
throw DbCompat.unexpectedState();
}
public int readEnumConstant(String[] names) {
throw DbCompat.unexpectedState();
}
public void skipField(Format declaredFormat) {
}
abstract Object readNext()
throws RefreshException;
Object checkAndConvert(Object o, Format declaredFormat)
throws RefreshException {
if (o == null) {
if (declaredFormat.isPrimitive()) {
throw new IllegalArgumentException
("A primitive type may not be null or missing: " +
declaredFormat.getClassName());
}
} else if (declaredFormat.isSimple()) {
if (declaredFormat.isPrimitive()) {
if (o.getClass() !=
declaredFormat.getWrapperFormat().getType()) {
throw new IllegalArgumentException
("Raw value class: " + o.getClass().getName() +
" must be the wrapper class for a primitive type: " +
declaredFormat.getClassName());
}
} else {
if (o.getClass() != declaredFormat.getType()) {
throw new IllegalArgumentException
("Raw value class: " + o.getClass().getName() +
" must be the declared class for a simple type: " +
declaredFormat.getClassName());
}
}
} else {
if (o instanceof RawObject) {
Object o2 = null;
if (!rawAccess) {
if (converted != null) {
o2 = converted.get(o);
} else {
converted = new IdentityHashMap();
}
}
if (o2 != null) {
o = o2;
} else {
if (!rawAccess) {
o = catalog.convertRawObject((RawObject) o, converted);
}
}
} else {
if (!SimpleCatalog.isSimpleType(o.getClass())) {
throw new IllegalArgumentException
("Raw value class: " + o.getClass().getName() +
" must be RawObject a simple type");
}
}
if (rawAccess) {
checkRawType(catalog, o, declaredFormat);
} else {
if (!declaredFormat.getType().isAssignableFrom(o.getClass())) {
throw new IllegalArgumentException
("Raw value class: " + o.getClass().getName() +
" is not assignable to type: " +
declaredFormat.getClassName());
}
}
}
return o;
}
static Format checkRawType(Catalog catalog,
Object o,
Format declaredFormat)
throws RefreshException {
assert declaredFormat != null;
Format format;
if (o instanceof RawObject) {
format = (Format) ((RawObject) o).getType();
/* Ensure a fresh format is used, in case of Replica refresh. */
format = catalog.getFormat(format.getId(), false /*expectStored*/);
} else {
format = catalog.getFormat(o.getClass(),
false /*checkEntitySubclassIndexes*/);
if (!format.isSimple() || format.isEnum()) {
throw new IllegalArgumentException
("Not a RawObject or a non-enum simple type: " +
format.getClassName());
}
}
if (!format.isAssignableTo(declaredFormat)) {
throw new IllegalArgumentException
("Not a subtype of the field's declared class " +
declaredFormat.getClassName() + ": " +
format.getClassName());
}
if (!format.isCurrentVersion()) {
throw new IllegalArgumentException
("Raw type version is not current. Class: " +
format.getClassName() + " Version: " +
format.getVersion());
}
Format proxiedFormat = format.getProxiedFormat();
if (proxiedFormat != null) {
format = proxiedFormat;
}
return format;
}
/* The following methods are a subset of the methods in TupleInput. */
public String readString()
throws RefreshException {
return (String) readNext();
}
public char readChar()
throws RefreshException {
return ((Character) readNext()).charValue();
}
public boolean readBoolean()
throws RefreshException {
return ((Boolean) readNext()).booleanValue();
}
public byte readByte()
throws RefreshException {
return ((Byte) readNext()).byteValue();
}
public short readShort()
throws RefreshException {
return ((Short) readNext()).shortValue();
}
public int readInt()
throws RefreshException {
return ((Integer) readNext()).intValue();
}
public long readLong()
throws RefreshException {
return ((Long) readNext()).longValue();
}
public float readSortedFloat()
throws RefreshException {
return ((Float) readNext()).floatValue();
}
public double readSortedDouble()
throws RefreshException {
return ((Double) readNext()).doubleValue();
}
public BigDecimal readSortedBigDecimal()
throws RefreshException {
return (BigDecimal) readNext();
}
public BigInteger readBigInteger()
throws RefreshException {
return (BigInteger) readNext();
}
}
© 2015 - 2025 Weber Informatics LLC | Privacy Policy