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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.document;
import com.yahoo.document.idstring.IdString;
import com.yahoo.document.serialization.DeserializationException;
import com.yahoo.document.serialization.DocumentReader;
import com.yahoo.document.serialization.DocumentWriter;
import com.yahoo.document.serialization.SerializationException;
import com.yahoo.vespa.objects.Deserializer;
import com.yahoo.vespa.objects.Identifiable;
import com.yahoo.vespa.objects.Serializer;
import java.io.Serializable;
/**
* The id of a document
*/
public class DocumentId extends Identifiable implements Serializable {
private IdString id;
private GlobalId globalId;
/**
* Constructor used for deserialization.
*/
public DocumentId(Deserializer buf) {
deserialize(buf);
}
/**
* Creates a document id based on the given document id URI string.
*
* The document id string can only contain text characters.
*/
public DocumentId(String id) {
if (id == null) {
throw new IllegalArgumentException("Cannot create DocumentId from null id.");
}
if (id.length() > IdString.MAX_LENGTH) {
throw new IllegalArgumentException("The document id(" + id.length() + ") is too long(" + IdString.MAX_LENGTH + "). " +
"However if you have already fed a document earlier on and want to remove it, you can do so by " +
"calling new DocumentId(IdString.createIdStringLessStrict()) that will bypass this restriction.");
}
this.id = IdString.createIdString(id);
globalId = null;
}
public DocumentId(IdString id) {
this.id = id;
globalId = null;
}
/**
* Creates a document id based on a serialized document id URI string.
*
* The document id string is not allowed to contain 0x0 byte characters.
* Otherwise all characters are allowed to ensure that document ids
* already stored can be de-serialized.
*/
public static DocumentId createFromSerialized(String id) {
return new DocumentId(IdString.createFromSerialized(id));
}
@Override
public DocumentId clone() {
return (DocumentId)super.clone();
}
public void setId(IdString id) {
this.id = id;
}
public IdString getScheme() {
return id;
}
public byte[] getGlobalId() {
if (globalId == null) {
globalId = new GlobalId(id);
}
return globalId.getRawId();
}
public int compareTo(Object o) {
DocumentId cmp = (DocumentId)o;
return id.toString().compareTo(cmp.id.toString());
}
public boolean equals(Object o) {
return o instanceof DocumentId && id.equals(((DocumentId)o).id);
}
public int hashCode() {
return id.hashCode();
}
public String toString() {
return id.toString();
}
@Override
public void onSerialize(Serializer target) throws SerializationException {
if (target instanceof DocumentWriter) {
((DocumentWriter)target).write(this);
} else {
target.put(null, id.toString());
}
}
public void onDeserialize(Deserializer data) throws DeserializationException {
if (data instanceof DocumentReader) {
id = ((DocumentReader)data).readDocumentId().getScheme();
} else {
id = IdString.createFromSerialized(data.getString(null));
}
}
public boolean hasDocType() {
return id.hasDocType();
}
public String getDocType() {
return id.getDocType();
}
}
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