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/**
* 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.solr.update;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.document.Fieldable;
import org.apache.solr.common.SolrDocument;
import org.apache.solr.common.SolrException;
import org.apache.solr.common.SolrInputDocument;
import org.apache.solr.common.SolrInputField;
import org.apache.solr.schema.*;
/**
* @version $Id: DocumentBuilder.java 949894 2010-05-31 23:36:01Z hossman $
*/
// Not thread safe - by design. Create a new builder for each thread.
public class DocumentBuilder {
private final IndexSchema schema;
private Document doc;
private HashMap map;
public DocumentBuilder(IndexSchema schema) {
this.schema = schema;
}
public void startDoc() {
doc = new Document();
map = new HashMap();
}
protected void addSingleField(SchemaField sfield, String val, float boost) {
//System.out.println("###################ADDING FIELD "+sfield+"="+val);
// we don't check for a null val ourselves because a solr.FieldType
// might actually want to map it to something. If createField()
// returns null, then we don't store the field.
Field field = sfield.createField(val, boost);
if (field != null) {
if (!sfield.multiValued()) {
String oldValue = map.put(sfield.getName(), val);
if (oldValue != null) {
throw new SolrException( SolrException.ErrorCode.BAD_REQUEST,"ERROR: multiple values encountered for non multiValued field " + sfield.getName()
+ ": first='" + oldValue + "' second='" + val + "'");
}
}
// field.setBoost(boost);
doc.add(field);
}
}
/**
* Add the specified {@link org.apache.solr.schema.SchemaField} to the document. Does not invoke the copyField mechanism.
* @param sfield The {@link org.apache.solr.schema.SchemaField} to add
* @param val The value to add
* @param boost The boost factor
*
* @see #addField(String, String)
* @see #addField(String, String, float)
* @see #addSingleField(org.apache.solr.schema.SchemaField, String, float)
*/
public void addField(SchemaField sfield, String val, float boost) {
addSingleField(sfield,val,boost);
}
/**
* Add the Field and value to the document, invoking the copyField mechanism
* @param name The name of the field
* @param val The value to add
*
* @see #addField(String, String, float)
* @see #addField(org.apache.solr.schema.SchemaField, String, float)
* @see #addSingleField(org.apache.solr.schema.SchemaField, String, float)
*/
public void addField(String name, String val) {
addField(name, val, 1.0f);
}
/**
* Add the Field and value to the document with the specified boost, invoking the copyField mechanism
* @param name The name of the field.
* @param val The value to add
* @param boost The boost
*
* @see #addField(String, String)
* @see #addField(org.apache.solr.schema.SchemaField, String, float)
* @see #addSingleField(org.apache.solr.schema.SchemaField, String, float)
*
*/
public void addField(String name, String val, float boost) {
SchemaField sfield = schema.getFieldOrNull(name);
if (sfield != null) {
addField(sfield,val,boost);
}
// Check if we should copy this field to any other fields.
// This could happen whether it is explicit or not.
final List copyFields = schema.getCopyFieldsList(name);
if (copyFields != null) {
for(CopyField cf : copyFields) {
addSingleField(cf.getDestination(), cf.getLimitedValue( val ), boost);
}
}
// error if this field name doesn't match anything
if (sfield==null && (copyFields==null || copyFields.size()==0)) {
throw new SolrException( SolrException.ErrorCode.BAD_REQUEST,"ERROR:unknown field '" + name + "'");
}
}
public void setBoost(float boost) {
doc.setBoost(boost);
}
public void endDoc() {
}
// specific to this type of document builder
public Document getDoc() throws IllegalArgumentException {
// Check for all required fields -- Note, all fields with a
// default value are defacto 'required' fields.
List missingFields = null;
for (SchemaField field : schema.getRequiredFields()) {
if (doc.getField(field.getName() ) == null) {
if (field.getDefaultValue() != null) {
doc.add( field.createField( field.getDefaultValue(), 1.0f ) );
} else {
if (missingFields==null) {
missingFields = new ArrayList(1);
}
missingFields.add(field.getName());
}
}
}
if (missingFields != null) {
StringBuilder builder = new StringBuilder();
// add the uniqueKey if possible
if( schema.getUniqueKeyField() != null ) {
String n = schema.getUniqueKeyField().getName();
String v = doc.get( n );
builder.append( "Document ["+n+"="+v+"] " );
}
builder.append("missing required fields: " );
for (String field : missingFields) {
builder.append(field);
builder.append(" ");
}
throw new SolrException( SolrException.ErrorCode.BAD_REQUEST, builder.toString());
}
Document ret = doc; doc=null;
return ret;
}
/**
* Convert a SolrInputDocument to a lucene Document.
*
* This function should go elsewhere. This builds the Document without an
* extra Map<> checking for multiple values. For more discussion, see:
* http://www.nabble.com/Re%3A-svn-commit%3A-r547493---in--lucene-solr-trunk%3A-.--src-java-org-apache-solr-common--src-java-org-apache-solr-schema--src-java-org-apache-solr-update--src-test-org-apache-solr-common--tf3931539.html
*
* TODO: /!\ NOTE /!\ This semantics of this function are still in flux.
* Something somewhere needs to be able to fill up a SolrDocument from
* a lucene document - this is one place that may happen. It may also be
* moved to an independent function
*
* @since solr 1.3
*/
public static Document toDocument( SolrInputDocument doc, IndexSchema schema )
{
Document out = new Document();
out.setBoost( doc.getDocumentBoost() );
// Load fields from SolrDocument to Document
for( SolrInputField field : doc ) {
String name = field.getName();
SchemaField sfield = schema.getFieldOrNull(name);
boolean used = false;
float boost = field.getBoost();
// Make sure it has the correct number
if( sfield!=null && !sfield.multiValued() && field.getValueCount() > 1 ) {
String id = "";
SchemaField sf = schema.getUniqueKeyField();
if( sf != null ) {
id = "["+doc.getFieldValue( sf.getName() )+"] ";
}
throw new SolrException( SolrException.ErrorCode.BAD_REQUEST,
"ERROR: "+id+"multiple values encountered for non multiValued field " +
sfield.getName() + ": " +field.getValue() );
}
// load each field value
boolean hasField = false;
for( Object v : field ) {
if( v == null ) {
continue;
}
String val = null;
hasField = true;
boolean isBinaryField = false;
if (sfield != null && sfield.getType() instanceof BinaryField) {
isBinaryField = true;
BinaryField binaryField = (BinaryField) sfield.getType();
Field f = binaryField.createField(sfield,v,boost);
if(f != null) out.add(f);
used = true;
} else {
// TODO!!! HACK -- date conversion
if (sfield != null && v instanceof Date && sfield.getType() instanceof DateField) {
DateField df = (DateField) sfield.getType();
val = df.toInternal((Date) v) + 'Z';
} else if (v != null) {
val = v.toString();
}
if (sfield != null) {
used = true;
Field f = sfield.createField(val, boost);
if (f != null) { // null fields are not added
out.add(f);
}
}
}
// Check if we should copy this field to any other fields.
// This could happen whether it is explicit or not.
List copyFields = schema.getCopyFieldsList(name);
for (CopyField cf : copyFields) {
SchemaField destinationField = cf.getDestination();
// check if the copy field is a multivalued or not
if (!destinationField.multiValued() && out.get(destinationField.getName()) != null) {
throw new SolrException(SolrException.ErrorCode.BAD_REQUEST,
"ERROR: multiple values encountered for non multiValued copy field " +
destinationField.getName() + ": " + val);
}
used = true;
Field f = null;
if (isBinaryField) {
if (destinationField.getType() instanceof BinaryField) {
BinaryField binaryField = (BinaryField) destinationField.getType();
f = binaryField.createField(destinationField, v, boost);
}
} else {
f = destinationField.createField(cf.getLimitedValue(val), boost);
}
if (f != null) { // null fields are not added
out.add(f);
}
}
// In lucene, the boost for a given field is the product of the
// document boost and *all* boosts on values of that field.
// For multi-valued fields, we only want to set the boost on the
// first field.
boost = 1.0f;
}
// make sure the field was used somehow...
if( !used && hasField ) {
throw new SolrException( SolrException.ErrorCode.BAD_REQUEST,"ERROR:unknown field '" +
name + "'");
}
}
// Now validate required fields or add default values
// fields with default values are defacto 'required'
for (SchemaField field : schema.getRequiredFields()) {
if (out.getField(field.getName() ) == null) {
if (field.getDefaultValue() != null) {
out.add( field.createField( field.getDefaultValue(), 1.0f ) );
}
else {
String id = schema.printableUniqueKey( out );
String msg = "Document ["+id+"] missing required field: " + field.getName();
throw new SolrException( SolrException.ErrorCode.BAD_REQUEST, msg );
}
}
}
return out;
}
/**
* Add fields from the solr document
*
* TODO: /!\ NOTE /!\ This semantics of this function are still in flux.
* Something somewhere needs to be able to fill up a SolrDocument from
* a lucene document - this is one place that may happen. It may also be
* moved to an independent function
*
* @since solr 1.3
*/
public SolrDocument loadStoredFields( SolrDocument doc, Document luceneDoc )
{
for( Object f : luceneDoc.getFields() ) {
Fieldable field = (Fieldable)f;
if( field.isStored() ) {
SchemaField sf = schema.getField( field.name() );
if( !schema.isCopyFieldTarget( sf ) ) {
doc.addField( field.name(), sf.getType().toObject( field ) );
}
}
}
return doc;
}
}
