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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.document.datatypes;
import com.yahoo.document.DataType;
import com.yahoo.document.Field;
import com.yahoo.document.PrimitiveDataType;
import com.yahoo.document.predicate.Predicate;
import com.yahoo.document.serialization.FieldReader;
import com.yahoo.document.serialization.FieldWriter;
import com.yahoo.document.serialization.XmlStream;
import java.util.Objects;
/**
* @author Simon Thoresen Hult
*/
public class PredicateFieldValue extends FieldValue {
private Predicate predicate;
public PredicateFieldValue() {
this((Predicate)null);
}
public PredicateFieldValue(Predicate predicate) {
this.predicate = predicate;
}
public PredicateFieldValue(String predicateString) {
this(Predicate.fromString(predicateString));
}
public Predicate getPredicate() {
return predicate;
}
public PredicateFieldValue setPredicate(Predicate predicate) {
this.predicate = predicate;
return this;
}
@Override
public DataType getDataType() {
return DataType.PREDICATE;
}
@Override
@Deprecated
public void printXml(XmlStream xml) {
if (predicate == null) {
return;
}
xml.addContent(predicate.toString());
}
@Override
public void clear() {
predicate = null;
}
@Override
public void assign(Object o) {
if (o == null) {
predicate = null;
} else if (o instanceof Predicate) {
predicate = (Predicate)o;
} else if (o instanceof PredicateFieldValue) {
predicate = ((PredicateFieldValue)o).predicate;
} else {
throw new IllegalArgumentException("Expected " + getClass().getName() + ", got " +
o.getClass().getName() + ".");
}
}
@Override
public void serialize(Field field, FieldWriter writer) {
writer.write(field, this);
}
@Override
public void deserialize(Field field, FieldReader reader) {
reader.read(field, this);
}
@Override
public Object getWrappedValue() {
return predicate;
}
@Override
public PredicateFieldValue clone() {
PredicateFieldValue obj = (PredicateFieldValue)super.clone();
if (predicate != null) {
try {
obj.predicate = predicate.clone();
} catch (CloneNotSupportedException e) {
throw new AssertionError(e);
}
}
return obj;
}
@Override
public int hashCode() {
return predicate != null ? predicate.hashCode() : 31;
}
@Override
public boolean equals(Object obj) {
if (obj == this) {
return true;
}
if (!(obj instanceof PredicateFieldValue)) {
return false;
}
PredicateFieldValue rhs = (PredicateFieldValue)obj;
if (!Objects.equals(predicate, rhs.predicate)) {
return false;
}
return true;
}
@Override
public String toString() {
return String.valueOf(predicate);
}
public static PrimitiveDataType.Factory getFactory() {
return new Factory();
}
private static class Factory extends PrimitiveDataType.Factory {
@Override public FieldValue create() { return new PredicateFieldValue(); }
@Override public FieldValue create(String value) { return new PredicateFieldValue(value); }
}
}
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