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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.vespa.indexinglanguage;
import com.yahoo.document.*;
import com.yahoo.document.datatypes.*;
import com.yahoo.document.fieldpathupdate.AddFieldPathUpdate;
import com.yahoo.document.fieldpathupdate.AssignFieldPathUpdate;
import com.yahoo.document.fieldpathupdate.FieldPathUpdate;
import com.yahoo.document.fieldpathupdate.RemoveFieldPathUpdate;
import com.yahoo.vespa.indexinglanguage.expressions.Expression;
import com.yahoo.vespa.indexinglanguage.expressions.FieldValueAdapter;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
/**
* @author Simon Thoresen Hult
*/
public class FieldPathUpdateAdapter implements UpdateAdapter {
private final DocumentAdapter adapter;
private final FieldPathUpdate update;
public FieldPathUpdateAdapter(DocumentAdapter documentAdapter, FieldPathUpdate fieldUpdate) {
adapter = documentAdapter;
update = fieldUpdate;
}
@Override
public Expression getExpression(Expression expression) {
return expression;
}
@Override
public DocumentUpdate getOutput() {
Document doc = adapter.getFullOutput();
DocumentUpdate upd = new DocumentUpdate(doc.getDataType(), doc.getId());
createUpdatesAt(new ArrayList<>(), adapter.getUpdatableOutput(), 0, upd);
return upd;
}
@Override
public DataType getInputType(Expression exp, String fieldName) {
return adapter.getInputType(exp, fieldName);
}
@Override
public FieldValue getInputValue(String fieldName) {
return adapter.getInputValue(fieldName);
}
@Override
public FieldValue getInputValue(FieldPath fieldPath) {
return adapter.getInputValue(fieldPath);
}
@Override
public void tryOutputType(Expression exp, String fieldName, DataType valueType) {
adapter.tryOutputType(exp, fieldName, valueType);
}
@Override
public FieldValueAdapter setOutputValue(Expression exp, String fieldName, FieldValue fieldValue) {
return adapter.setOutputValue(exp, fieldName, fieldValue);
}
@Override
public DocumentType getDocumentType() { return adapter.getDocumentType(); }
@SuppressWarnings({ "unchecked", "rawtypes" })
private void createUpdatesAt(List<FieldPathEntry> path, FieldValue value, int idx, DocumentUpdate out) {
FieldPath updatePath = update.getFieldPath();
if (idx < updatePath.size()) {
FieldPathEntry pathEntry = updatePath.get(idx);
FieldPathEntry.Type type = pathEntry.getType();
if (type == FieldPathEntry.Type.STRUCT_FIELD) {
if (!(value instanceof StructuredFieldValue)) {
throw new IllegalArgumentException("Expected structured field value, got " +
value.getClass().getName() + ".");
}
for (Iterator<Map.Entry<Field, FieldValue>> it = ((StructuredFieldValue)value).iterator(); it.hasNext();) {
Map.Entry<Field, FieldValue> structEntry = it.next();
List<FieldPathEntry> nextPath = new ArrayList<>(path);
nextPath.add(FieldPathEntry.newStructFieldEntry(structEntry.getKey()));
createUpdatesAt(nextPath, structEntry.getValue(), idx + 1, out);
}
} else if (type == FieldPathEntry.Type.MAP_KEY) {
if (value instanceof WeightedSet) {
WeightedSet wset = (WeightedSet)value;
for (Iterator<FieldValue> it = wset.fieldValueIterator(); it.hasNext();) {
FieldValue wsetEntry = it.next();
List<FieldPathEntry> nextPath = new ArrayList<>(path);
nextPath.add(FieldPathEntry.newMapLookupEntry(wsetEntry, DataType.INT));
createUpdatesAt(nextPath, new IntegerFieldValue(wset.get(wsetEntry)), idx + 1, out);
}
} else if (value instanceof MapFieldValue) {
MapFieldValue<FieldValue, FieldValue> map = (MapFieldValue)value;
for (Map.Entry<FieldValue, FieldValue> entry : map.entrySet()) {
List<FieldPathEntry> nextPath = new ArrayList<>(path);
FieldValue nextVal = entry.getValue();
nextPath.add(FieldPathEntry.newMapLookupEntry(entry.getKey(), nextVal.getDataType()));
createUpdatesAt(nextPath, nextVal, idx + 1, out);
}
} else {
throw new IllegalArgumentException("Expected map or weighted set, got " +
value.getClass().getName() + ".");
}
} else {
path.add(pathEntry);
createUpdatesAt(new ArrayList<>(path), value, idx + 1, out);
}
} else if (update instanceof AddFieldPathUpdate) {
if (!(value instanceof Array)) {
throw new IllegalStateException("Expected array, got " +
value.getClass().getName() + ".");
}
out.addFieldPathUpdate(new AddFieldPathUpdate(update.getDocumentType(), new FieldPath(path).toString(),
update.getOriginalWhereClause(), (Array)value));
} else if (update instanceof AssignFieldPathUpdate) {
out.addFieldPathUpdate(new AssignFieldPathUpdate(update.getDocumentType(), new FieldPath(path).toString(),
update.getOriginalWhereClause(), value));
} else if (update instanceof RemoveFieldPathUpdate) {
out.addFieldPathUpdate(new RemoveFieldPathUpdate(update.getDocumentType(), new FieldPath(path).toString(),
update.getOriginalWhereClause()));
}
}
}
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