@Override
public void handleNode(XNode nodeToHandler, List<SqlNode> targetContents) {
List<SqlNode> contents = parseDynamicTags(nodeToHandler);
MixedSqlNode mixedSqlNode = new MixedSqlNode(contents);
String prefix = nodeToHandler.getStringAttribute("prefix");
String prefixOverrides = nodeToHandler.getStringAttribute("prefixOverrides");
String suffix = nodeToHandler.getStringAttribute("suffix");
String suffixOverrides = nodeToHandler.getStringAttribute("suffixOverrides");
TrimSqlNode trimSqlNode =
new TrimSqlNode(
configuration, mixedSqlNode, prefix, prefixOverrides, suffix, suffixOverrides);
targetContents.add(trimSqlNode);
}
private void handleWhenOtherwiseNodes(
XNode chooseSqlNode, List<SqlNode> ifSqlNodes, List<SqlNode> defaultSqlNodes) {
List<XNode> children = chooseSqlNode.getChildren();
for (XNode child : children) {
String nodeName = child.getNode().getNodeName();
NodeHandler handler = nodeHandlers.get(nodeName);
if (handler instanceof IfHandler) {
handler.handleNode(child, ifSqlNodes);
} else if (handler instanceof OtherwiseHandler) {
handler.handleNode(child, defaultSqlNodes);
}
}
}
@Override
public void handleNode(XNode nodeToHandler, List<SqlNode> targetContents) {
List<SqlNode> contents = parseDynamicTags(nodeToHandler);
MixedSqlNode mixedSqlNode = new MixedSqlNode(contents);
String test = nodeToHandler.getStringAttribute("test");
IfSqlNode ifSqlNode = new IfSqlNode(mixedSqlNode, test);
targetContents.add(ifSqlNode);
}
private List<SqlNode> parseDynamicTags(XNode node) {
List<SqlNode> contents = new ArrayList<SqlNode>();
NodeList children = node.getNode().getChildNodes(); // 直接通过w3c包获取NodeList
int childrenLength = children.getLength();
for (int i = 0; i < childrenLength; i++) {
XNode child = node.newXNode(children.item(i));
Node childNode = child.getNode();
short nodeType = childNode.getNodeType();
// <![CDATA[]]>中括着的纯文本，它没有子节点
if (nodeType == Node.CDATA_SECTION_NODE || nodeType == Node.TEXT_NODE) {
String data = child.getStringBody("");
contents.add(new TextSqlNode(data));
} else if (nodeType == Node.ELEMENT_NODE) {
String nodeName = childNode.getNodeName();
NodeHandler handler = nodeHandlers.get(nodeName);
if (handler == null) {
throw new BuilderException("Unknown element <" + nodeName + "> in SQL statement.");
}
handler.handleNode(child, contents);
}
}
return contents;
}
@Override
public void handleNode(XNode nodeToHandler, List<SqlNode> targetContents) {
List<SqlNode> contents = parseDynamicTags(nodeToHandler);
MixedSqlNode mixedSqlNode = new MixedSqlNode(contents);
String collection = nodeToHandler.getStringAttribute("collection");
String item = nodeToHandler.getStringAttribute("item");
String index = nodeToHandler.getStringAttribute("index");
String open = nodeToHandler.getStringAttribute("open");
String close = nodeToHandler.getStringAttribute("close");
String separator = nodeToHandler.getStringAttribute("separator");
ForEachSqlNode forEachSqlNode =
new ForEachSqlNode(
configuration, mixedSqlNode, collection, index, item, open, close, separator);
targetContents.add(forEachSqlNode);
}