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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.annotation.SpanTree;
import com.yahoo.document.datatypes.FieldValue;
import com.yahoo.document.datatypes.StringFieldValue;
import com.yahoo.document.datatypes.StructuredFieldValue;
import java.util.HashMap;
import java.util.Map;
/**
* This adds an Extractor to the ExtendedField that can be used to get access the backed spantrees
* used in the concrete document types.
* @author baldersheim
*/
public class ExtendedStringField extends ExtendedField {
public interface ExtractSpanTrees {
Map<String, SpanTree> get(StructuredFieldValue doc);
void set(StructuredFieldValue doc, Map<String, SpanTree> trees);
}
private final ExtractSpanTrees extractSpanTrees;
public ExtendedStringField(String name, DataType type, Extract extract, ExtractSpanTrees extractSpanTrees) {
super(name, type, extract);
this.extractSpanTrees = extractSpanTrees;
}
@Override
public FieldValue getFieldValue(StructuredFieldValue doc) {
StringFieldValue sfv = (StringFieldValue) super.getFieldValue(doc);
Map<String, SpanTree> trees = extractSpanTrees.get(doc);
if (trees != null) {
for (SpanTree tree : trees.values()) {
sfv.setSpanTree(tree);
}
}
return sfv;
}
@Override
public FieldValue setFieldValue(StructuredFieldValue doc, FieldValue fv) {
FieldValue old = getFieldValue(doc);
StringFieldValue sfv = (StringFieldValue) fv;
super.setFieldValue(doc, sfv);
Map<String, SpanTree> trees = null;
if (sfv != null) {
trees = sfv.getSpanTreeMap();
if (trees == null) {
trees = new HashMap<>();
}
}
extractSpanTrees.set(doc, trees);
return old;
}
}
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