/**
* 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.schema;
import org.apache.solr.common.SolrException;
import org.apache.solr.common.SolrException.ErrorCode;
import org.apache.lucene.document.Fieldable;
import org.apache.lucene.search.SortField;
import org.apache.solr.search.QParser;
import org.apache.solr.response.TextResponseWriter;
import org.apache.solr.response.XMLWriter;
import java.util.Map;
import java.io.IOException;
/**
* Encapsulates all information about a Field in a Solr Schema
*
* @version $Id: SchemaField.java 1150848 2011-07-25 18:59:14Z hossman $
*/
public final class SchemaField extends FieldProperties {
final String name;
final FieldType type;
final int properties;
final String defaultValue;
boolean required = false; // this can't be final since it may be changed dynamically
/** Create a new SchemaField with the given name and type,
* using all the default properties from the type.
*/
public SchemaField(String name, FieldType type) {
this(name, type, type.properties, null);
}
/** Create a new SchemaField from an existing one by using all
* of the properties of the prototype except the field name.
*/
public SchemaField(SchemaField prototype, String name) {
this(name, prototype.type, prototype.properties, prototype.defaultValue );
}
/** Create a new SchemaField with the given name and type,
* and with the specified properties. Properties are *not*
* inherited from the type in this case, so users of this
* constructor should derive the properties from type.getProperties()
* using all the default properties from the type.
*/
public SchemaField(String name, FieldType type, int properties, String defaultValue ) {
this.name = name;
this.type = type;
this.properties = properties;
this.defaultValue = defaultValue;
// initalize with the required property flag
required = (properties & REQUIRED) !=0;
}
public String getName() { return name; }
public FieldType getType() { return type; }
int getProperties() { return properties; }
public boolean indexed() { return (properties & INDEXED)!=0; }
public boolean stored() { return (properties & STORED)!=0; }
public boolean storeTermVector() { return (properties & STORE_TERMVECTORS)!=0; }
public boolean storeTermPositions() { return (properties & STORE_TERMPOSITIONS)!=0; }
public boolean storeTermOffsets() { return (properties & STORE_TERMOFFSETS)!=0; }
public boolean omitNorms() { return (properties & OMIT_NORMS)!=0; }
/** @deprecated Use {@link #omitTermFreqAndPositions} */
@Deprecated
public boolean omitTf() { return omitTermFreqAndPositions(); }
public boolean omitTermFreqAndPositions() { return (properties & OMIT_TF_POSITIONS)!=0; }
public boolean omitPositions() { return (properties & OMIT_POSITIONS)!=0; }
public boolean multiValued() { return (properties & MULTIVALUED)!=0; }
public boolean sortMissingFirst() { return (properties & SORT_MISSING_FIRST)!=0; }
public boolean sortMissingLast() { return (properties & SORT_MISSING_LAST)!=0; }
public boolean isRequired() { return required; }
// things that should be determined by field type, not set as options
boolean isTokenized() { return (properties & TOKENIZED)!=0; }
boolean isBinary() { return (properties & BINARY)!=0; }
public Fieldable createField(String val, float boost) {
return type.createField(this,val,boost);
}
public Fieldable[] createFields(String val, float boost) {
return type.createFields(this,val,boost);
}
/**
* If true, then use {@link #createFields(String, float)}, else use {@link #createField} to save an extra allocation
* @return true if this field is a poly field
*/
public boolean isPolyField(){
return type.isPolyField();
}
@Override
public String toString() {
return name + "{type="+type.getTypeName()
+ ((defaultValue==null)?"":(",default="+defaultValue))
+ ",properties=" + propertiesToString(properties)
+ ( required ? ", required=true" : "" )
+ "}";
}
public void write(XMLWriter writer, String name, Fieldable val) throws IOException {
// name is passed in because it may be null if name should not be used.
type.write(writer,name,val);
}
public void write(TextResponseWriter writer, String name, Fieldable val) throws IOException {
// name is passed in because it may be null if name should not be used.
type.write(writer,name,val);
}
/**
* Delegates to the FieldType for this field
* @see FieldType#getSortField
*/
public SortField getSortField(boolean top) {
return type.getSortField(this, top);
}
/**
* Sanity checks that the properties of this field type are plausible
* for a field that may be used in sorting, throwing an appropriate
* exception (including the field name) if it is not. FieldType subclasses
* can choose to call this method in their getSortField implementation
* @see FieldType#getSortField
*/
public void checkSortability() throws SolrException {
if (! indexed() ) {
throw new SolrException(SolrException.ErrorCode.BAD_REQUEST,
"can not sort on unindexed field: "
+ getName());
}
if ( multiValued() ) {
throw new SolrException(SolrException.ErrorCode.BAD_REQUEST,
"can not sort on multivalued field: "
+ getName());
}
}
/**
* Sanity checks that the properties of this field type are plausible
* for a field that may be used to get a FieldCacheSource, throwing
* an appropriate exception (including the field name) if it is not.
* FieldType subclasses can choose to call this method in their
* getValueSource implementation
* @see FieldType#getValueSource
*/
public void checkFieldCacheSource(QParser parser) throws SolrException {
if (! indexed() ) {
throw new SolrException(SolrException.ErrorCode.BAD_REQUEST,
"can not use FieldCache on unindexed field: "
+ getName());
}
if ( multiValued() ) {
throw new SolrException(SolrException.ErrorCode.BAD_REQUEST,
"can not use FieldCache on multivalued field: "
+ getName());
}
}
static SchemaField create(String name, FieldType ft, Map<String,String> props) {
String defaultValue = null;
if( props.containsKey( "default" ) ) {
defaultValue = props.get( "default" );
}
return new SchemaField(name, ft, calcProps(name, ft, props), defaultValue );
}
/**
* Create a SchemaField w/ the props specified. Does not support a default value.
* @param name The name of the SchemaField
* @param ft The {@link org.apache.solr.schema.FieldType} of the field
* @param props The props. See {@link #calcProps(String, org.apache.solr.schema.FieldType, java.util.Map)}
* @param defValue The default Value for the field
* @return The SchemaField
*
* @see #create(String, FieldType, java.util.Map)
*/
static SchemaField create(String name, FieldType ft, int props, String defValue){
return new SchemaField(name, ft, props, defValue);
}
static int calcProps(String name, FieldType ft, Map<String, String> props) {
int trueProps = parseProperties(props,true);
int falseProps = parseProperties(props,false);
int p = ft.properties;
//
// If any properties were explicitly turned off, then turn off other properties
// that depend on that.
//
if (on(falseProps,STORED)) {
int pp = STORED | BINARY;
if (on(pp,trueProps)) {
throw new RuntimeException("SchemaField: " + name + " conflicting stored field options:" + props);
}
p &= ~pp;
}
if (on(falseProps,INDEXED)) {
int pp = (INDEXED
| STORE_TERMVECTORS | STORE_TERMPOSITIONS | STORE_TERMOFFSETS
| SORT_MISSING_FIRST | SORT_MISSING_LAST);
if (on(pp,trueProps)) {
throw new RuntimeException("SchemaField: " + name + " conflicting 'true' field options for non-indexed field:" + props);
}
p &= ~pp;
}
if (on(falseProps,INDEXED)) {
int pp = (OMIT_NORMS | OMIT_TF_POSITIONS | OMIT_POSITIONS);
if (on(pp,falseProps)) {
throw new RuntimeException("SchemaField: " + name + " conflicting 'false' field options for non-indexed field:" + props);
}
p &= ~pp;
}
if (on(trueProps,OMIT_TF_POSITIONS)) {
int pp = (OMIT_POSITIONS | OMIT_TF_POSITIONS);
if (on(pp, falseProps)) {
throw new RuntimeException("SchemaField: " + name + " conflicting tf and position field options:" + props);
}
p &= ~pp;
}
if (on(falseProps,STORE_TERMVECTORS)) {
int pp = (STORE_TERMVECTORS | STORE_TERMPOSITIONS | STORE_TERMOFFSETS);
if (on(pp,trueProps)) {
throw new RuntimeException("SchemaField: " + name + " conflicting termvector field options:" + props);
}
p &= ~pp;
}
// override sort flags
if (on(trueProps,SORT_MISSING_FIRST)) {
p &= ~SORT_MISSING_LAST;
}
if (on(trueProps,SORT_MISSING_LAST)) {
p &= ~SORT_MISSING_FIRST;
}
p &= ~falseProps;
p |= trueProps;
return p;
}
public String getDefaultValue() {
return defaultValue;
}
@Override
public int hashCode() {
return name.hashCode();
}
@Override
public boolean equals(Object obj) {
return(obj instanceof SchemaField) && name.equals(((SchemaField)obj).name);
}
}