All Downloads are FREE. Search and download functionalities are using the official Maven repository.

jodd.json.JsonParserBase Maven / Gradle / Ivy

Go to download

Jodd bundle - all classes in one jar

There is a newer version: 5.1.0-20190624
Show newest version
// Copyright (c) 2003-present, Jodd Team (http://jodd.org)
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.

package jodd.json;

import jodd.introspector.ClassDescriptor;
import jodd.introspector.ClassIntrospector;
import jodd.introspector.CtorDescriptor;
import jodd.introspector.PropertyDescriptor;
import jodd.introspector.Setter;
import jodd.typeconverter.TypeConverterManager;

import java.util.ArrayList;
import java.util.Collection;
import java.util.HashSet;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.function.Supplier;

/**
 * Just a base class of {@link jodd.json.JsonParser} that contains
 * various utilities, to reduce the size of a parser.
 */
public abstract class JsonParserBase {

	protected static final Supplier HASMAP_SUPPLIER = LinkedHashMap::new;
	protected static final Supplier LAZYMAP_SUPPLIER = LazyMap::new;

	protected static final Supplier ARRAYLIST_SUPPLIER = ArrayList::new;
	protected static final Supplier LAZYLIST_SUPPLIER = LazyList::new;

	protected Supplier mapSupplier = HASMAP_SUPPLIER;
	protected Supplier listSupplier = ARRAYLIST_SUPPLIER;
	protected List classnameWhitelist;
	protected boolean strictTypes;

	public JsonParserBase(final boolean strictTypes) {
		this.strictTypes = strictTypes;
	}


	/**
	 * Creates new instance of {@link jodd.json.MapToBean}.
	 */
	protected MapToBean createMapToBean(final String classMetadataName) {
		return new MapToBean(this, classMetadataName);
	}

	// ---------------------------------------------------------------- object tools

	/**
	 * Creates new type for JSON array objects.
	 * It returns a collection.
	 * Later, the collection will be converted into the target type.
	 */
	@SuppressWarnings("unchecked")
	protected Collection newArrayInstance(final Class targetType) {
		if (targetType == null ||
			targetType == List.class ||
			targetType == Collection.class ||
			targetType.isArray()) {

			return listSupplier.get();
		}

		if (targetType == Set.class) {
			return new HashSet<>();
		}

		try {
			return (Collection) targetType.getDeclaredConstructor().newInstance();
		} catch (Exception e) {
			throw new JsonException(e);
		}
	}

	/**
	 * Creates new object or a HashMap if type is not specified.
	 */
	protected Object newObjectInstance(final Class targetType) {
		if (targetType == null ||
			targetType == Map.class) {

			return mapSupplier.get();
		}

		final ClassDescriptor cd = ClassIntrospector.get().lookup(targetType);

		final CtorDescriptor ctorDescriptor = cd.getDefaultCtorDescriptor(true);
		if (ctorDescriptor == null) {
			throw new JsonException("Default ctor not found for: " + targetType.getName());
		}

		try {
//			return ClassUtil.newInstance(targetType);
			return ctorDescriptor.getConstructor().newInstance();
		} catch (Exception e) {
			throw new JsonException(e);
		}
	}

	/**
	 * Injects value into the targets property.
	 */
	protected void injectValueIntoObject(final Object target, final PropertyDescriptor pd, final Object value) {
		Object convertedValue = value;

		if (value != null) {
			Class targetClass = pd.getType();

			convertedValue = convertType(value, targetClass);
		}

		try {
			Setter setter = pd.getSetter(true);
			if (setter != null) {
				setter.invokeSetter(target, convertedValue);
			}
		} catch (Exception ex) {
			throw new JsonException(ex);
		}
	}

	/**
	 * Converts type of the given value.
	 */
	protected Object convertType(final Object value, final Class targetType) {
		final Class valueClass = value.getClass();

		if (valueClass == targetType) {
			return value;
		}

		try {
			return TypeConverterManager.get().convertType(value, targetType);
		}
		catch (Exception ex) {
			if (!strictTypes) {
				return null;
			}
			throw new JsonException("Type conversion failed", ex);
		}
	}

}    

    

    

            

    

            



    
    






    
© 2015 - 2024 Weber Informatics LLC | Privacy Policy