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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.schema.fieldoperation;
import com.yahoo.schema.document.SDField;
import java.util.Collections;
import java.util.LinkedList;
import java.util.List;
import java.util.ListIterator;
/**
* @author Einar M R Rosenvinge
*/
public class StructFieldOperation implements FieldOperation, FieldOperationContainer {
private final String structFieldName;
private final List<FieldOperation> pendingOperations = new LinkedList<>();
public StructFieldOperation(String structFieldName) {
this.structFieldName = structFieldName;
}
public void apply(SDField field) {
SDField structField = field.getStructField(structFieldName);
if (structField == null ) {
throw new IllegalArgumentException("Struct field '" + structFieldName + "' has not been defined in struct " +
"for field '" + field.getName() + "'.");
}
applyOperations(structField);
}
@Override
public void addOperation(FieldOperation op) {
pendingOperations.add(op);
}
@Override
public void applyOperations(SDField field) {
if (pendingOperations.isEmpty()) return;
Collections.sort(pendingOperations);
ListIterator<FieldOperation> ops = pendingOperations.listIterator();
while (ops.hasNext()) {
FieldOperation op = ops.next();
ops.remove();
op.apply(field);
}
}
@Override
public String getName() {
return structFieldName;
}
}
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