ProductCustAttrValueTag.java

package org.onehippo.forge.konakart.hst.tags;

import com.konakart.appif.ProdCustAttrIf;
import org.apache.commons.lang.StringUtils;
import org.onehippo.forge.konakart.hst.beans.KKProductDocument;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import javax.servlet.jsp.JspException;
import javax.servlet.jsp.JspWriter;
import javax.servlet.jsp.tagext.TagSupport;
import java.io.IOException;

public class ProductCustAttrValueTag extends TagSupport {

  private Logger log = LoggerFactory.getLogger(ProductCustAttrValueTag.class);

  private KKProductDocument product;
  private int custAttrId = -1;
  private String custAttrName;

  public void setProduct(KKProductDocument product) {
    this.product = product;
  }

  public void setCustAttrId(Integer custAttrId) {
    this.custAttrId = custAttrId;
  }

  public void setCustAttrName(String custAttrName) {
    this.custAttrName = custAttrName;
  }

  @Override
  public int doStartTag() throws JspException {

    if (product == null) {
      log.warn("Cannot get a custom attribute because no product is set");

      return EVAL_PAGE;
    }

    if (custAttrId == -1 && StringUtils.isEmpty(custAttrName)) {
      log.warn("Cannot get a custom attribute because no custAttrId or custAttrName is set");

      return EVAL_PAGE;
    }

    String value = null;

    ProdCustAttrIf[] customAttrArray = product.getProductIf().getCustomAttrArray();

    // Use the id to retrieve the custom attribute value
    if (custAttrId != -1) {
      value = customAttrArray[custAttrId].getValue();
    } else { // find by the name of the custom attribute
      for (ProdCustAttrIf prodCustAttrIf : customAttrArray) {
        if (StringUtils.equalsIgnoreCase(prodCustAttrIf.getName(), custAttrName)) {
          value = prodCustAttrIf.getValue();
        }
      }
    }

    if (value != null) {
      JspWriter writer = pageContext.getOut();
      try {
        writer.write(value);
      } catch (IOException e) {
        throw new JspException("IOException while trying to write script tag", e);
      }
    }

    return SKIP_BODY;
  }
}