/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.jackrabbit.oak.plugins.segment;
import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Preconditions.checkElementIndex;
import static com.google.common.base.Preconditions.checkNotNull;
import static com.google.common.collect.Maps.newHashMap;
import static java.util.Collections.emptyMap;
import java.util.Iterator;
import java.util.Map;
import java.util.NoSuchElementException;
import javax.annotation.Nonnull;
import javax.jcr.PropertyType;
import org.apache.jackrabbit.oak.api.AbstractPropertyState;
import org.apache.jackrabbit.oak.api.PropertyState;
import org.apache.jackrabbit.oak.api.Type;
import org.apache.jackrabbit.oak.plugins.value.Conversions;
import org.apache.jackrabbit.oak.plugins.value.Conversions.Converter;
class SegmentPropertyState extends Record implements PropertyState {
private final PropertyTemplate template;
public SegmentPropertyState(
Segment segment, RecordId id, PropertyTemplate template) {
super(segment, id);
this.template = checkNotNull(template);
}
private ListRecord getValueList(Segment segment) {
RecordId listId = getRecordId();
int size = 1;
if (isArray()) {
size = segment.readInt(getOffset());
if (size > 0) {
listId = segment.readRecordId(getOffset(4));
}
}
return new ListRecord(segment, listId, size);
}
Map<String, RecordId> getValueRecords() {
if (getType().tag() == PropertyType.BINARY) {
return emptyMap();
}
Map<String, RecordId> map = newHashMap();
Segment segment = getSegment();
ListRecord values = getValueList(segment);
for (int i = 0; i < values.size(); i++) {
RecordId valueId = values.getEntry(i);
String value = segment.readString(valueId);
map.put(value, valueId);
}
return map;
}
@Override @Nonnull
public String getName() {
return template.getName();
}
@Override
public Type<?> getType() {
return template.getType();
}
@Override
public boolean isArray() {
return getType().isArray();
}
@Override
public int count() {
if (isArray()) {
return getSegment().readInt(getOffset());
} else {
return 1;
}
}
@Override @Nonnull @SuppressWarnings("unchecked")
public <T> T getValue(Type<T> type) {
if (type.isArray()) {
final int count = count();
final Type<?> base = type.getBaseType();
return (T) new Iterable<Object>() {
@Override
public Iterator<Object> iterator() {
return new Iterator<Object>() {
private int index = 0;
@Override
public boolean hasNext() {
return index < count;
}
@Override
public Object next() {
if (hasNext()) {
return getValue(base, index++);
} else {
throw new NoSuchElementException();
}
}
@Override
public void remove() {
throw new UnsupportedOperationException();
}
};
}
};
} else {
return getValue(type, 0);
}
}
@Override
public long size() {
return size(0);
}
@Override @Nonnull @SuppressWarnings("unchecked")
public <T> T getValue(Type<T> type, int index) {
checkNotNull(type);
checkArgument(!type.isArray(), "Type must not be an array type");
Segment segment = getSegment();
ListRecord values = getValueList(segment);
checkElementIndex(index, values.size());
Type<?> base = getType();
if (base.isArray()) {
base = base.getBaseType();
}
RecordId valueId = values.getEntry(index);
if (type == Type.BINARY) {
return (T) new SegmentBlob(segment, valueId);
} else {
String value = segment.readString(valueId);
if (type == Type.STRING || type == Type.URI || type == Type.DATE
|| type == Type.NAME || type == Type.PATH
|| type == Type.REFERENCE || type == Type.WEAKREFERENCE) {
return (T) value;
} else {
Converter converter = Conversions.convert(value, base);
if (type == Type.BOOLEAN) {
return (T) Boolean.valueOf(converter.toBoolean());
} else if (type == Type.DECIMAL) {
return (T) converter.toDecimal();
} else if (type == Type.DOUBLE) {
return (T) Double.valueOf(converter.toDouble());
} else if (type == Type.LONG) {
return (T) Long.valueOf(converter.toLong());
} else {
throw new UnsupportedOperationException(
"Unknown type: " + type);
}
}
}
}
@Override
public long size(int index) {
Segment segment = getSegment();
ListRecord values = getValueList(segment);
checkElementIndex(index, values.size());
return segment.readLength(values.getEntry(0));
}
//------------------------------------------------------------< Object >--
@Override
public boolean equals(Object object) {
// optimize for common cases
if (this == object) {
return true;
} else if (object instanceof SegmentPropertyState) {
SegmentPropertyState that = (SegmentPropertyState) object;
if (!template.equals(that.template)) {
return false;
} else if (getRecordId().equals(that.getRecordId())) {
return true;
}
}
// fall back to default equality check in AbstractPropertyState
return object instanceof PropertyState
&& AbstractPropertyState.equal(this, (PropertyState) object);
}
@Override
public int hashCode() {
return AbstractPropertyState.hashCode(this);
}
@Override
public String toString() {
return AbstractPropertyState.toString(this);
}
}