Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance. Project price only 1 $
You can buy this project and download/modify it how often you want.
/**
* Copyright (C) 2006-2015 phloc systems
* http://www.phloc.com
* office[at]phloc[dot]com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.phloc.commons.collections.attrs;
import java.util.Arrays;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import javax.annotation.concurrent.NotThreadSafe;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.phloc.commons.CGlobal;
import com.phloc.commons.lang.GenericReflection;
import com.phloc.commons.string.StringParser;
import com.phloc.commons.typeconvert.TypeConverter;
/**
* Abstract base class for all kind of string-object mapping container. This
* implementation provides a default implementation for all things that can be
* independently implemented from the underlying data structure.
*
* @author Philip Helger
*/
@NotThreadSafe
public abstract class AbstractReadonlyAttributeContainer implements IReadonlyAttributeContainer
{
private static final Logger s_aLogger = LoggerFactory.getLogger (AbstractReadonlyAttributeContainer.class);
@Nullable
public final DATATYPE getCastedAttribute (@Nullable final String sName)
{
return GenericReflection. uncheckedCast (getAttributeObject (sName));
}
@Nullable
public final DATATYPE getCastedAttribute (@Nullable final String sName, @Nullable final DATATYPE aDefault)
{
final DATATYPE aValue = this. getCastedAttribute (sName);
return aValue == null ? aDefault : aValue;
}
@Nullable
public final DATATYPE getTypedAttribute (@Nullable final String sName,
@Nonnull final Class aDstClass)
{
return TypeConverter.convertIfNecessary (getAttributeObject (sName), aDstClass);
}
@Nullable
public final DATATYPE getTypedAttribute (@Nullable final String sName,
@Nonnull final Class aDstClass,
@Nullable final DATATYPE aDefault)
{
final DATATYPE aValue = this. getTypedAttribute (sName, aDstClass);
return aValue == null ? aDefault : aValue;
}
@Nullable
public final String getAttributeAsString (@Nullable final String sName)
{
return getAttributeAsString (sName, null);
}
/**
* Get the string representation of the passed value, suitable for parameters.
*
* @param sParamName
* The name of the parameters. Has just informal character, for
* warnings. May be null.
* @param aValue
* The value to be converted to a String. May be null.
* Explicitly supported data types are: String, String[]. All other
* data types are returned as "toString()".
* @param sDefault
* The default value to be returned, if the passed value is
* null or an empty String array.
* @return The default value if the value is null or an empty
* String array, the value as string otherwise. If the value is a
* String[] than the first element is returned, and the other elements
* are discarded.
*/
@Nullable
public static String getAsString (@Nullable final String sParamName,
@Nullable final Object aValue,
@Nullable final String sDefault)
{
if (aValue == null)
return sDefault;
if (aValue instanceof String)
return (String) aValue;
if (aValue instanceof String [])
{
// expected a single string but got an array
final String [] aArray = (String []) aValue;
s_aLogger.warn ("The parameter '" +
sParamName +
"' is an array with " +
aArray.length +
" items; using the first one if possible: " +
Arrays.toString (aArray));
return aArray.length > 0 ? aArray[0] : sDefault;
}
return aValue.toString ();
}
@Nullable
public final String getAttributeAsString (@Nullable final String sName, @Nullable final String sDefault)
{
final Object aValue = getAttributeObject (sName);
return getAsString (sName, aValue, sDefault);
}
public static int getAsInt (@Nullable final String sParamName, @Nullable final Object aValue, final int nDefault)
{
if (aValue == null)
return nDefault;
if (aValue instanceof Number)
return ((Number) aValue).intValue ();
// Interpret as String
final String sValue = getAsString (sParamName, aValue, null);
return StringParser.parseInt (sValue, nDefault);
}
public final int getAttributeAsInt (@Nullable final String sName)
{
return getAttributeAsInt (sName, CGlobal.ILLEGAL_UINT);
}
public final int getAttributeAsInt (@Nullable final String sName, final int nDefault)
{
final Object aValue = getAttributeObject (sName);
return getAsInt (sName, aValue, nDefault);
}
public static long getAsLong (@Nullable final String sParamName,
@Nullable final Object aValue,
final long nDefault)
{
if (aValue == null)
return nDefault;
if (aValue instanceof Number)
return ((Number) aValue).longValue ();
// Interpret as String
final String sValue = getAsString (sParamName, aValue, null);
return StringParser.parseLong (sValue, nDefault);
}
public final long getAttributeAsLong (@Nullable final String sName)
{
return getAttributeAsLong (sName, CGlobal.ILLEGAL_ULONG);
}
public final long getAttributeAsLong (@Nullable final String sName, final long nDefault)
{
final Object aValue = getAttributeObject (sName);
return getAsLong (sName, aValue, nDefault);
}
public static double getAsDouble (@Nullable final String sParamName,
@Nullable final Object aValue,
final double dDefault)
{
if (aValue == null)
return dDefault;
if (aValue instanceof Number)
return ((Number) aValue).doubleValue ();
// Interpret as String
final String sValue = getAsString (sParamName, aValue, null);
return StringParser.parseDouble (sValue, dDefault);
}
public final double getAttributeAsDouble (@Nullable final String sName)
{
return getAttributeAsDouble (sName, CGlobal.ILLEGAL_UINT);
}
public final double getAttributeAsDouble (@Nullable final String sName, final double dDefault)
{
final Object aValue = getAttributeObject (sName);
return getAsDouble (sName, aValue, dDefault);
}
public static boolean getAsBoolean (@Nullable final String sParamName,
@Nullable final Object aValue,
final boolean bDefault)
{
if (aValue == null)
return bDefault;
if (aValue instanceof Boolean)
return ((Boolean) aValue).booleanValue ();
// Interpret as String
final String sValue = getAsString (sParamName, aValue, null);
return StringParser.parseBool (sValue, bDefault);
}
public final boolean getAttributeAsBoolean (@Nullable final String sName)
{
return getAttributeAsBoolean (sName, false);
}
public final boolean getAttributeAsBoolean (@Nullable final String sName, final boolean bDefault)
{
final Object aValue = getAttributeObject (sName);
return getAsBoolean (sName, aValue, bDefault);
}
}
