From b8c23e6043365c703a4c6d9145e8001bfbbe4178 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Roland=20H=C3=A4der?= <roland@mxchange.org>
Date: Fri, 30 Mar 2018 00:05:16 +0200
Subject: [PATCH] Continued: - added filterByPrice() method for p:dataTable
 being able to filter on   BigDecimal values
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Signed-off-by: Roland Häder <roland@mxchange.org>
---
 .../jcoreee/bean/faces/BaseFacesBean.java     | 36 +++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/src/org/mxchange/jcoreee/bean/faces/BaseFacesBean.java b/src/org/mxchange/jcoreee/bean/faces/BaseFacesBean.java
index 16dbefe..93d502c 100644
--- a/src/org/mxchange/jcoreee/bean/faces/BaseFacesBean.java
+++ b/src/org/mxchange/jcoreee/bean/faces/BaseFacesBean.java
@@ -17,6 +17,7 @@
 package org.mxchange.jcoreee.bean.faces;
 
 import java.io.Serializable;
+import java.math.BigDecimal;
 import java.security.Principal;
 import java.text.MessageFormat;
 import java.util.ArrayList;
@@ -80,6 +81,41 @@ public abstract class BaseFacesBean implements Serializable {
 		super();
 	}
 
+	/**
+	 * A filter for prices
+	 * <p>
+	 * @param value  Actual value to check
+	 * @param filter Filter value to check against {@code value}
+	 * @param locale Locale
+	 * <p>
+	 * @return Whether price ({@code value}) is at least {@code filter}
+	 *
+	 * @see https://www.primefaces.org/showcase/ui/data/datatable/filter.xhtml
+	 */
+	@SuppressWarnings ("unchecked")
+	public boolean filterByPrice (final Object value, final Object filter, final Locale locale) {
+		// Get trimmed string or NULL
+		final String filterText = (filter == null) ? null : filter.toString().trim();
+
+		// Is null or empty?
+		if (filterText == null || filterText.isEmpty()) {
+			// Then return TRUE
+			return true;
+		}
+
+		// Is value NULL or not castable?
+		if (value == null) {
+			// Return FALSE
+			return false;
+		} else if (!(value instanceof Comparable)) {
+			// Not castable
+			throw new ClassCastException("value is not instance of Comparable");
+		}
+
+		// Do the cast and compare
+		return ((Comparable<BigDecimal>) value).compareTo(BigDecimal.valueOf(Double.valueOf(filterText))) > 0;
+	}
+
 	/**
 	 * Determines principal's name or returns null if no principal (security) is
 	 * set.
-- 
2.39.5