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PathImpl.java
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PathImpl.java
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package cz.cvut.kbss.jopa.query.criteria;
import cz.cvut.kbss.jopa.model.metamodel.*;
import cz.cvut.kbss.jopa.model.query.criteria.Expression;
import cz.cvut.kbss.jopa.model.query.criteria.Path;
import cz.cvut.kbss.jopa.model.query.criteria.Selection;
public class PathImpl<X> extends ExpressionImpl<X> implements Path<X> {
protected final Metamodel metamodel;
public PathImpl(Metamodel metamodel, Class<X> type) {
super(type, new ExpressionEntityImpl<>(type));
this.metamodel = metamodel;
}
public PathImpl(Metamodel metamodel, Attribute attribute, ExpressionImpl expression) {
super(null, new ExpressionAttributeImpl(attribute, expression));
this.metamodel = metamodel;
}
protected String getQueryPart() {
return null;
}
@Override
public <Y> Path<Y> getAttr(String attributeName) throws IllegalArgumentException {
Attribute attribute = metamodel.entity(type).getAttribute(attributeName);
Path<Y> nextExpression = new PathImpl<Y>(this.metamodel, attribute, this.expression);
this.expression = (ExpressionImpl) nextExpression;
return nextExpression;
}
@Override
public <Y> Path<Y> getAttr(SingularAttribute<? super X, Y> attribute) {
Path<Y> nextExpression = new PathImpl<Y>(this.metamodel, attribute, this.expression);
this.expression = (ExpressionImpl) nextExpression;
return nextExpression;
}
@Override
public Path<?> getParentPath() {
return null;
}
@Override
public void setExpressionToQuery(StringBuilder query) {
return;
}
}