001 /** 002 * Implements the CFML Function len 003 */ 004 package railo.runtime.functions.string; 005 006 import java.util.List; 007 import java.util.Map; 008 009 import railo.runtime.PageContext; 010 import railo.runtime.exp.FunctionException; 011 import railo.runtime.ext.function.Function; 012 import railo.runtime.op.Caster; 013 import railo.runtime.type.Collection; 014 import railo.runtime.type.Query; 015 016 public final class Len implements Function { 017 public static double call(PageContext pc , String string) { 018 return string.length(); 019 } 020 public static double call(PageContext pc , Object obj) throws FunctionException { 021 double len=invoke(obj, -1); 022 if(len==-1)throw new FunctionException(pc,"len",1,"object","this type ["+Caster.toTypeName(obj)+"] is not supported for returning the len"); 023 return len; 024 } 025 026 public static double invoke(Object obj, double defaultValue) { 027 if(obj instanceof String)return ((String)obj).length(); 028 if(obj instanceof Query)return ((Query)obj).getRecordcount(); 029 if(obj instanceof Collection)return ((Collection)obj).size(); 030 if(obj instanceof Map)return ((Map)obj).size(); 031 if(obj instanceof List)return ((List)obj).size(); 032 if(obj instanceof Object[])return ((Object[])obj).length; 033 if(obj instanceof short[])return ((short[])obj).length; 034 if(obj instanceof int[])return ((int[])obj).length; 035 if(obj instanceof float[])return ((float[])obj).length; 036 if(obj instanceof double[])return ((double[])obj).length; 037 if(obj instanceof long[])return ((long[])obj).length; 038 if(obj instanceof char[])return ((char[])obj).length; 039 if(obj instanceof boolean[])return ((boolean[])obj).length; 040 if(obj instanceof StringBuffer)return ((StringBuffer)obj).length(); 041 if(obj instanceof StringBuilder)return ((StringBuilder)obj).length(); 042 return defaultValue; 043 } 044 }