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package com.avaje.ebeaninternal.server.expression;

import com.avaje.ebean.event.BeanQueryRequest;
import com.avaje.ebeaninternal.api.SpiExpressionRequest;
import com.avaje.ebeaninternal.server.el.ElPropertyValue;

class CaseInsensitiveEqualExpression extends AbstractExpression implements LuceneAwareExpression {

  private static final long serialVersionUID = -6406036750998971064L;

  private final String value;

  CaseInsensitiveEqualExpression(FilterExprPath pathPrefix, String propertyName, String value) {
    super(pathPrefix, propertyName);
    this.value = value.toLowerCase();
  }

  public void addBindValues(SpiExpressionRequest request) {

    ElPropertyValue prop = getElProp(request);
    if (prop != null && prop.isDbEncrypted()) {
      // bind the key as well as the value
      String encryptKey = prop.getBeanProperty().getEncryptKey().getStringValue();
      request.addBindValue(encryptKey);
    }

    request.addBindValue(value);
  }

  public void addSql(SpiExpressionRequest request) {

    String propertyName = getPropertyName();
    String pname = propertyName;

    ElPropertyValue prop = getElProp(request);
    if (prop != null && prop.isDbEncrypted()) {
      pname = prop.getBeanProperty().getDecryptProperty(propertyName);
    }

    request.append("lower(").append(pname).append(") =? ");
  }

  public int queryAutoFetchHash() {
    int hc = CaseInsensitiveEqualExpression.class.getName().hashCode();
    hc = hc * 31 + propName.hashCode();
    return hc;
  }

  public int queryPlanHash(BeanQueryRequest request) {
    return queryAutoFetchHash();
  }

  public int queryBindHash() {
    return value.hashCode();
  }
}