com.aspectran.core.context.rule.ItemRuleUtils Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2023 The Aspectran Project
*
* 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.aspectran.core.context.rule;
import com.aspectran.core.activity.request.FileParameter;
import com.aspectran.core.component.bean.annotation.AttrItem;
import com.aspectran.core.component.bean.annotation.ParamItem;
import com.aspectran.core.context.expr.token.Token;
import com.aspectran.core.context.rule.params.EntryParameters;
import com.aspectran.core.context.rule.params.ItemParameters;
import com.aspectran.core.context.rule.type.ItemType;
import com.aspectran.core.context.rule.type.ItemValueType;
import com.aspectran.core.util.Assert;
import com.aspectran.core.util.apon.Parameters;
import java.io.File;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import java.util.Set;
/**
* Miscellaneous {@link ItemRule} utility methods.
*
* @since 6.3.0
*/
public class ItemRuleUtils {
private ItemRuleUtils() {
}
/**
* Returns the {@code Class} according to the given item value.
* If the type of the item value is unknown, the class of the value
* actually assigned is returned.
*
* @param itemRule the item rule
* @param value the value actually assigned to the item
* @return a {@code Class} determined by the type of item or its actual value
*/
public static Class getPrototypeClass(ItemRule itemRule, Object value) {
ItemValueType valueType = itemRule.getValueType();
if (itemRule.getType() == ItemType.ARRAY) {
if (valueType == ItemValueType.STRING) {
return String[].class;
} else if (valueType == ItemValueType.INT) {
return Integer[].class;
} else if (valueType == ItemValueType.LONG) {
return Long[].class;
} else if (valueType == ItemValueType.FLOAT) {
return Float[].class;
} else if (valueType == ItemValueType.DOUBLE) {
return Double[].class;
} else if (valueType == ItemValueType.BOOLEAN) {
return Boolean[].class;
} else if (valueType == ItemValueType.PARAMETERS) {
return Parameters[].class;
} else if (valueType == ItemValueType.FILE) {
return File[].class;
} else if (valueType == ItemValueType.MULTIPART_FILE) {
return FileParameter[].class;
} else {
return (value != null ? value.getClass() : Object[].class);
}
} else if (itemRule.getType() == ItemType.LIST) {
return (value != null ? value.getClass() : List.class);
} else if (itemRule.getType() == ItemType.MAP) {
return (value != null ? value.getClass() : Map.class);
} else if (itemRule.getType() == ItemType.SET) {
return (value != null ? value.getClass() : Set.class);
} else if (itemRule.getType() == ItemType.PROPERTIES) {
return (value != null ? value.getClass() : Properties.class);
} else {
if (valueType == ItemValueType.STRING) {
return String.class;
} else if (valueType == ItemValueType.INT) {
return Integer.class;
} else if (valueType == ItemValueType.LONG) {
return Long.class;
} else if (valueType == ItemValueType.FLOAT) {
return Float.class;
} else if (valueType == ItemValueType.DOUBLE) {
return Double.class;
} else if (valueType == ItemValueType.BOOLEAN) {
return Boolean.class;
} else if (valueType == ItemValueType.PARAMETERS) {
return Parameters.class;
} else if (valueType == ItemValueType.FILE) {
return File.class;
} else if (valueType == ItemValueType.MULTIPART_FILE) {
return FileParameter.class;
} else {
return (value != null ? value.getClass() : Object.class);
}
}
}
/**
* Returns an {@code Iterator} of all the tokens the item has.
*
* @param itemRule the item rule
* @return an {@code Iterator} for all tokens
*/
public static Iterator tokenIterator(ItemRule itemRule) {
Assert.notNull(itemRule, "itemRule must not be null");
Iterator it = null;
if (itemRule.isListableType()) {
List list = itemRule.getTokensList();
if (list != null) {
it = list.iterator();
}
} else if (itemRule.isMappableType()) {
Map map = itemRule.getTokensMap();
if (map != null) {
it = map.values().iterator();
}
} else {
return new Iterator() {
private int count = 0;
@Override
public boolean hasNext() {
return (count++ < 1);
}
@Override
public Token[] next() {
return itemRule.getTokens();
}
@Override
public void remove() {
throw new UnsupportedOperationException("Cannot remove an element of an array");
}
};
}
return it;
}
/**
* Convert the given {@code ItemParameters} list into an {@code ItemRuleMap}.
*
* @param itemParametersList the ItemParameters list to convert
* @return the item rule map
* @throws IllegalRuleException if an illegal rule is found
*/
public static ItemRuleMap toItemRuleMap(List itemParametersList) throws IllegalRuleException {
if (itemParametersList == null || itemParametersList.isEmpty()) {
return null;
}
ItemRuleMap itemRuleMap = new ItemRuleMap();
for (ItemParameters parameters : itemParametersList) {
itemRuleMap.putItemRule(toItemRule(parameters));
}
return itemRuleMap;
}
/**
* Convert the given {@code ItemParameters} list into an {@code ItemRuleList}.
*
* @param itemParametersList the ItemParameters list to convert
* @return the item rule list
* @throws IllegalRuleException if an illegal rule is found
*/
public static ItemRuleList toItemRuleList(List itemParametersList) throws IllegalRuleException {
ItemRuleList itemRuleList = new ItemRuleList();
if (itemParametersList != null) {
for (ItemParameters parameters : itemParametersList) {
itemRuleList.add(toItemRule(parameters));
}
}
return itemRuleList;
}
/**
* Convert the given {@code ItemParameters} into an {@code ItemRule}.
*
* @param itemParameters the item parameters
* @return an instance of {@code ItemRule}
* @throws IllegalRuleException if an illegal rule is found
*/
public static ItemRule toItemRule(ItemParameters itemParameters) throws IllegalRuleException {
Assert.notNull(itemParameters, "itemParameters must not be null");
String type = itemParameters.getString(ItemParameters.type);
String name = itemParameters.getString(ItemParameters.name);
String valueType = itemParameters.getString(ItemParameters.valueType);
Boolean tokenize = itemParameters.getBoolean(ItemParameters.tokenize);
Boolean mandatory = itemParameters.getBoolean(ItemParameters.mandatory);
Boolean secret = itemParameters.getBoolean(ItemParameters.secret);
ItemRule itemRule = ItemRule.newInstance(type, name, valueType, tokenize, mandatory, secret);
if (itemRule.isListableType()) {
if (itemRule.getValueType() != ItemValueType.BEAN) {
List stringList = itemParameters.getStringList(ItemParameters.value);
if (stringList != null) {
for (String value : stringList) {
itemRule.addValue(value);
}
}
}
} else if (itemRule.isMappableType()) {
List parametersList = itemParameters.getParametersList(ItemParameters.entry);
if (parametersList != null && itemRule.getValueType() != ItemValueType.BEAN) {
for (Parameters parameters : parametersList) {
if (parameters != null) {
String entryName = parameters.getString(EntryParameters.name);
String entryValue = parameters.getString(EntryParameters.value);
itemRule.putValue(entryName, entryValue);
}
}
}
} else {
if (itemRule.getValueType() != ItemValueType.BEAN) {
List stringList = itemParameters.getStringList(ItemParameters.value);
if (stringList != null && !stringList.isEmpty()) {
itemRule.setValue(stringList.get(0));
}
}
}
return itemRule;
}
public static ItemRule toItemRule(ParamItem paramItem) throws IllegalRuleException {
Assert.notNull(paramItem, "paramItem must not be null");
String name = paramItem.name();
String value = paramItem.value();
boolean tokenize = paramItem.tokenize();
boolean mandatory = paramItem.mandatory();
boolean secret = paramItem.secret();
ItemRule itemRule = ItemRule.newInstance(null, name, null,
tokenize, mandatory, secret);
itemRule.setValue(value);
return itemRule;
}
public static ItemRule toItemRule(AttrItem attrItem) throws IllegalRuleException {
Assert.notNull(attrItem, "attrItem must not be null");
String name = attrItem.name();
String value = attrItem.value();
boolean tokenize = attrItem.tokenize();
boolean mandatory = attrItem.mandatory();
boolean secret = attrItem.secret();
ItemRule itemRule = ItemRule.newInstance(null, name, null,
tokenize, mandatory, secret);
itemRule.setValue(value);
return itemRule;
}
}