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package io.ebeaninternal.api;

import io.ebean.plugin.BeanType;

import java.util.LinkedHashSet;
import java.util.Set;

/**
 * Property expression validation request for a given root bean type.
 */
public final class SpiExpressionValidation {

  private final BeanType desc;
  private final LinkedHashSet unknown = new LinkedHashSet<>();

  public SpiExpressionValidation(BeanType desc) {
    this.desc = desc;
  }

  /**
   * Validate that the property expression (path) is valid.
   */
  public void validate(String propertyName) {
    if (!desc.isValidExpression(propertyName)) {
      unknown.add(propertyName);
    }
  }

  /**
   * Return the set of properties considered as having unknown paths.
   */
  public Set unknownProperties() {
    return unknown;
  }

}