com.avaje.ebeaninternal.server.el.ElPropertyChainBuilder Maven / Gradle / Ivy
package com.avaje.ebeaninternal.server.el;
import java.util.ArrayList;
import java.util.List;
/**
* Utility object used to build a ElPropertyChain.
*
* Builds a ElPropertyChain based on a chain of properties with dot separators.
*
*
* This can navigate an object graph based on dot notation such as
* order.customer.name.
*
*/
public class ElPropertyChainBuilder {
private final String expression;
private final List chain = new ArrayList();
private final boolean embedded;
private boolean containsMany;
/**
* Create with the original expression.
*/
public ElPropertyChainBuilder(boolean embedded, String expression) {
this.embedded = embedded;
this.expression = expression;
}
public boolean isContainsMany() {
return containsMany;
}
public void setContainsMany() {
this.containsMany = true;
}
public String getExpression() {
return expression;
}
/**
* Add a ElGetValue element to the chain.
*/
public ElPropertyChainBuilder add(ElPropertyValue element) {
if (element == null) {
throw new NullPointerException("element null in expression " + expression);
}
chain.add(element);
return this;
}
/**
* Build the immutable ElGetChain from the build information.
*/
public ElPropertyChain build() {
return new ElPropertyChain(containsMany, embedded, expression, chain.toArray(new ElPropertyValue[chain.size()]));
}
}