org.apache.ibatis.parsing.XNode Maven / Gradle / Ivy
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/*
* Copyright 2009-2023 the original author or authors.
*
* 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
*
* https://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 org.apache.ibatis.parsing;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import java.util.function.Supplier;
import org.w3c.dom.CharacterData;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
/**
* @author Clinton Begin
*/
public class XNode {
private final Node node;
private final String name;
private final String body;
private final Properties attributes;
private final Properties variables;
private final XPathParser xpathParser;
public XNode(XPathParser xpathParser, Node node, Properties variables) {
this.xpathParser = xpathParser;
this.node = node;
this.name = node.getNodeName();
this.variables = variables;
this.attributes = parseAttributes(node);
this.body = parseBody(node);
}
public XNode newXNode(Node node) {
return new XNode(xpathParser, node, variables);
}
public XNode getParent() {
Node parent = node.getParentNode();
if (!(parent instanceof Element)) {
return null;
}
return new XNode(xpathParser, parent, variables);
}
public String getPath() {
StringBuilder builder = new StringBuilder();
Node current = node;
while (current instanceof Element) {
if (current != node) {
builder.insert(0, "/");
}
builder.insert(0, current.getNodeName());
current = current.getParentNode();
}
return builder.toString();
}
public String getValueBasedIdentifier() {
StringBuilder builder = new StringBuilder();
XNode current = this;
while (current != null) {
if (current != this) {
builder.insert(0, "_");
}
String value = current.getStringAttribute("id",
current.getStringAttribute("value", current.getStringAttribute("property", (String) null)));
if (value != null) {
value = value.replace('.', '_');
builder.insert(0, "]");
builder.insert(0, value);
builder.insert(0, "[");
}
builder.insert(0, current.getName());
current = current.getParent();
}
return builder.toString();
}
public String evalString(String expression) {
return xpathParser.evalString(node, expression);
}
public Boolean evalBoolean(String expression) {
return xpathParser.evalBoolean(node, expression);
}
public Double evalDouble(String expression) {
return xpathParser.evalDouble(node, expression);
}
public List evalNodes(String expression) {
return xpathParser.evalNodes(node, expression);
}
public XNode evalNode(String expression) {
return xpathParser.evalNode(node, expression);
}
public Node getNode() {
return node;
}
public String getName() {
return name;
}
public String getStringBody() {
return getStringBody(null);
}
public String getStringBody(String def) {
return body == null ? def : body;
}
public Boolean getBooleanBody() {
return getBooleanBody(null);
}
public Boolean getBooleanBody(Boolean def) {
return body == null ? def : Boolean.valueOf(body);
}
public Integer getIntBody() {
return getIntBody(null);
}
public Integer getIntBody(Integer def) {
return body == null ? def : Integer.valueOf(body);
}
public Long getLongBody() {
return getLongBody(null);
}
public Long getLongBody(Long def) {
return body == null ? def : Long.valueOf(body);
}
public Double getDoubleBody() {
return getDoubleBody(null);
}
public Double getDoubleBody(Double def) {
return body == null ? def : Double.valueOf(body);
}
public Float getFloatBody() {
return getFloatBody(null);
}
public Float getFloatBody(Float def) {
return body == null ? def : Float.valueOf(body);
}
public > T getEnumAttribute(Class enumType, String name) {
return getEnumAttribute(enumType, name, null);
}
public > T getEnumAttribute(Class enumType, String name, T def) {
String value = getStringAttribute(name);
return value == null ? def : Enum.valueOf(enumType, value);
}
/**
* Return a attribute value as String.
*
* If attribute value is absent, return value that provided from supplier of default value.
*
* @param name
* attribute name
* @param defSupplier
* a supplier of default value
*
* @return the string attribute
*
* @since 3.5.4
*/
public String getStringAttribute(String name, Supplier defSupplier) {
String value = attributes.getProperty(name);
return value == null ? defSupplier.get() : value;
}
public String getStringAttribute(String name) {
return getStringAttribute(name, (String) null);
}
public String getStringAttribute(String name, String def) {
String value = attributes.getProperty(name);
return value == null ? def : value;
}
public Boolean getBooleanAttribute(String name) {
return getBooleanAttribute(name, null);
}
public Boolean getBooleanAttribute(String name, Boolean def) {
String value = attributes.getProperty(name);
return value == null ? def : Boolean.valueOf(value);
}
public Integer getIntAttribute(String name) {
return getIntAttribute(name, null);
}
public Integer getIntAttribute(String name, Integer def) {
String value = attributes.getProperty(name);
return value == null ? def : Integer.valueOf(value);
}
public Long getLongAttribute(String name) {
return getLongAttribute(name, null);
}
public Long getLongAttribute(String name, Long def) {
String value = attributes.getProperty(name);
return value == null ? def : Long.valueOf(value);
}
public Double getDoubleAttribute(String name) {
return getDoubleAttribute(name, null);
}
public Double getDoubleAttribute(String name, Double def) {
String value = attributes.getProperty(name);
return value == null ? def : Double.valueOf(value);
}
public Float getFloatAttribute(String name) {
return getFloatAttribute(name, null);
}
public Float getFloatAttribute(String name, Float def) {
String value = attributes.getProperty(name);
return value == null ? def : Float.valueOf(value);
}
public List getChildren() {
List children = new ArrayList<>();
NodeList nodeList = node.getChildNodes();
if (nodeList != null) {
for (int i = 0, n = nodeList.getLength(); i < n; i++) {
Node node = nodeList.item(i);
if (node.getNodeType() == Node.ELEMENT_NODE) {
children.add(new XNode(xpathParser, node, variables));
}
}
}
return children;
}
public Properties getChildrenAsProperties() {
Properties properties = new Properties();
for (XNode child : getChildren()) {
String name = child.getStringAttribute("name");
String value = child.getStringAttribute("value");
if (name != null && value != null) {
properties.setProperty(name, value);
}
}
return properties;
}
@Override
public String toString() {
return buildToString(new StringBuilder(), 0).toString();
}
private StringBuilder buildToString(StringBuilder builder, int indentLevel) {
indent(builder, indentLevel).append("<").append(name);
for (Map.Entry entry : attributes.entrySet()) {
builder.append(" ");
builder.append(entry.getKey());
builder.append("=\"");
builder.append(entry.getValue());
builder.append("\"");
}
NodeList nodeList = node.getChildNodes();
if (nodeList == null || nodeList.getLength() == 0) {
builder.append(" />\n");
} else {
builder.append(">\n");
for (int i = 0, n = nodeList.getLength(); i < n; i++) {
Node node = nodeList.item(i);
short nodeType = node.getNodeType();
if (nodeType == Node.ELEMENT_NODE) {
new XNode(xpathParser, node, variables).buildToString(builder, indentLevel + 1);
} else {
String text = getBodyData(node).trim();
if (text.length() > 0) {
indent(builder, indentLevel + 1).append(text).append("\n");
}
}
}
indent(builder, indentLevel).append("\n");
}
return builder;
}
private StringBuilder indent(StringBuilder builder, int level) {
for (int i = 0; i < level; i++) {
builder.append(" ");
}
return builder;
}
private Properties parseAttributes(Node n) {
Properties attributes = new Properties();
NamedNodeMap attributeNodes = n.getAttributes();
if (attributeNodes != null) {
for (int i = 0; i < attributeNodes.getLength(); i++) {
Node attribute = attributeNodes.item(i);
String value = PropertyParser.parse(attribute.getNodeValue(), variables);
attributes.put(attribute.getNodeName(), value);
}
}
return attributes;
}
private String parseBody(Node node) {
String data = getBodyData(node);
if (data == null) {
NodeList children = node.getChildNodes();
for (int i = 0; i < children.getLength(); i++) {
Node child = children.item(i);
data = getBodyData(child);
if (data != null) {
break;
}
}
}
return data;
}
private String getBodyData(Node child) {
if (child.getNodeType() == Node.CDATA_SECTION_NODE || child.getNodeType() == Node.TEXT_NODE) {
String data = ((CharacterData) child).getData();
return PropertyParser.parse(data, variables);
}
return null;
}
}