Resolve QueryParser exception.
This commit is contained in:
Magese
parent
fb4defedb7
commit
f0059e2c78
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@ -46,11 +46,11 @@ import java.util.Stack;
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public class IKQueryExpressionParser {
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private List<Element> elements = new ArrayList<>();
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private final List<Element> elements = new ArrayList<>();
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private Stack<Query> querys = new Stack<>();
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private final Stack<Query> querys = new Stack<>();
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private Stack<Element> operates = new Stack<>();
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private final Stack<Element> operates = new Stack<>();
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/**
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* 解析查询表达式，生成Lucene Query对象
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@ -61,9 +61,9 @@ public class IKQueryExpressionParser {
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Query lucenceQuery = null;
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if (expression != null && !"".equals(expression.trim())) {
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try {
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//文法解析
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// 文法解析
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this.splitElements(expression);
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//语法解析
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// 语法解析
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this.parseSyntax();
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if (this.querys.size() == 1) {
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lucenceQuery = this.querys.pop();
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@ -87,263 +87,263 @@ public class IKQueryExpressionParser {
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if (expression == null) {
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return;
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}
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Element curretElement = null;
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Element currentElement = null;
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char[] expChars = expression.toCharArray();
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for (char expChar : expChars) {
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switch (expChar) {
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case '&':
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if (curretElement == null) {
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curretElement = new Element();
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curretElement.type = '&';
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curretElement.append(expChar);
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} else if (curretElement.type == '&') {
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curretElement.append(expChar);
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this.elements.add(curretElement);
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curretElement = null;
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} else if (curretElement.type == '\'') {
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curretElement.append(expChar);
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if (currentElement == null) {
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currentElement = new Element();
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currentElement.type = '&';
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currentElement.append(expChar);
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} else if (currentElement.type == '&') {
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currentElement.append(expChar);
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this.elements.add(currentElement);
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currentElement = null;
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} else if (currentElement.type == '\'') {
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currentElement.append(expChar);
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} else {
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this.elements.add(curretElement);
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curretElement = new Element();
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curretElement.type = '&';
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curretElement.append(expChar);
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this.elements.add(currentElement);
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currentElement = new Element();
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currentElement.type = '&';
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currentElement.append(expChar);
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}
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break;
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case '|':
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if (curretElement == null) {
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curretElement = new Element();
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curretElement.type = '|';
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curretElement.append(expChar);
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} else if (curretElement.type == '|') {
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curretElement.append(expChar);
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this.elements.add(curretElement);
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curretElement = null;
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} else if (curretElement.type == '\'') {
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curretElement.append(expChar);
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if (currentElement == null) {
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currentElement = new Element();
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currentElement.type = '|';
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currentElement.append(expChar);
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} else if (currentElement.type == '|') {
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currentElement.append(expChar);
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this.elements.add(currentElement);
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currentElement = null;
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} else if (currentElement.type == '\'') {
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currentElement.append(expChar);
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} else {
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this.elements.add(curretElement);
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curretElement = new Element();
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curretElement.type = '|';
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curretElement.append(expChar);
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this.elements.add(currentElement);
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currentElement = new Element();
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currentElement.type = '|';
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currentElement.append(expChar);
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}
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break;
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case '-':
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if (curretElement != null) {
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if (curretElement.type == '\'') {
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curretElement.append(expChar);
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if (currentElement != null) {
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if (currentElement.type == '\'') {
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currentElement.append(expChar);
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continue;
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} else {
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this.elements.add(curretElement);
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this.elements.add(currentElement);
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}
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}
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curretElement = new Element();
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curretElement.type = '-';
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curretElement.append(expChar);
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this.elements.add(curretElement);
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curretElement = null;
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currentElement = new Element();
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currentElement.type = '-';
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currentElement.append(expChar);
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this.elements.add(currentElement);
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currentElement = null;
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break;
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case '(':
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if (curretElement != null) {
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if (curretElement.type == '\'') {
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curretElement.append(expChar);
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if (currentElement != null) {
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if (currentElement.type == '\'') {
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currentElement.append(expChar);
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continue;
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} else {
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this.elements.add(curretElement);
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this.elements.add(currentElement);
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}
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}
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curretElement = new Element();
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curretElement.type = '(';
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curretElement.append(expChar);
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this.elements.add(curretElement);
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curretElement = null;
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currentElement = new Element();
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currentElement.type = '(';
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currentElement.append(expChar);
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this.elements.add(currentElement);
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currentElement = null;
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break;
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case ')':
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if (curretElement != null) {
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if (curretElement.type == '\'') {
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curretElement.append(expChar);
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if (currentElement != null) {
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if (currentElement.type == '\'') {
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currentElement.append(expChar);
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continue;
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} else {
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this.elements.add(curretElement);
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this.elements.add(currentElement);
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}
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}
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curretElement = new Element();
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curretElement.type = ')';
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curretElement.append(expChar);
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this.elements.add(curretElement);
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curretElement = null;
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currentElement = new Element();
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currentElement.type = ')';
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currentElement.append(expChar);
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this.elements.add(currentElement);
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currentElement = null;
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break;
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case ':':
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if (curretElement != null) {
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if (curretElement.type == '\'') {
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curretElement.append(expChar);
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if (currentElement != null) {
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if (currentElement.type == '\'') {
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currentElement.append(expChar);
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continue;
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} else {
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this.elements.add(curretElement);
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this.elements.add(currentElement);
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}
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}
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curretElement = new Element();
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curretElement.type = ':';
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curretElement.append(expChar);
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this.elements.add(curretElement);
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curretElement = null;
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currentElement = new Element();
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currentElement.type = ':';
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currentElement.append(expChar);
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this.elements.add(currentElement);
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currentElement = null;
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break;
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case '=':
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if (curretElement != null) {
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if (curretElement.type == '\'') {
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curretElement.append(expChar);
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if (currentElement != null) {
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if (currentElement.type == '\'') {
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currentElement.append(expChar);
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continue;
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} else {
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this.elements.add(curretElement);
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this.elements.add(currentElement);
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}
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}
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curretElement = new Element();
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curretElement.type = '=';
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curretElement.append(expChar);
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this.elements.add(curretElement);
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curretElement = null;
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currentElement = new Element();
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currentElement.type = '=';
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currentElement.append(expChar);
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this.elements.add(currentElement);
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currentElement = null;
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break;
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case ' ':
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if (curretElement != null) {
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if (curretElement.type == '\'') {
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curretElement.append(expChar);
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if (currentElement != null) {
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if (currentElement.type == '\'') {
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currentElement.append(expChar);
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} else {
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this.elements.add(curretElement);
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curretElement = null;
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this.elements.add(currentElement);
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currentElement = null;
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}
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}
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break;
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case '\'':
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if (curretElement == null) {
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curretElement = new Element();
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curretElement.type = '\'';
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if (currentElement == null) {
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currentElement = new Element();
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currentElement.type = '\'';
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} else if (curretElement.type == '\'') {
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this.elements.add(curretElement);
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curretElement = null;
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} else if (currentElement.type == '\'') {
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this.elements.add(currentElement);
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currentElement = null;
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} else {
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this.elements.add(curretElement);
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curretElement = new Element();
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curretElement.type = '\'';
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this.elements.add(currentElement);
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currentElement = new Element();
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currentElement.type = '\'';
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}
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break;
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case '[':
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if (curretElement != null) {
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if (curretElement.type == '\'') {
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curretElement.append(expChar);
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if (currentElement != null) {
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if (currentElement.type == '\'') {
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currentElement.append(expChar);
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continue;
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} else {
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this.elements.add(curretElement);
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this.elements.add(currentElement);
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}
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}
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curretElement = new Element();
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curretElement.type = '[';
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curretElement.append(expChar);
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this.elements.add(curretElement);
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curretElement = null;
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currentElement = new Element();
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currentElement.type = '[';
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currentElement.append(expChar);
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this.elements.add(currentElement);
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currentElement = null;
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break;
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case ']':
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if (curretElement != null) {
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if (curretElement.type == '\'') {
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curretElement.append(expChar);
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if (currentElement != null) {
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if (currentElement.type == '\'') {
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currentElement.append(expChar);
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continue;
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} else {
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this.elements.add(curretElement);
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this.elements.add(currentElement);
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}
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}
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curretElement = new Element();
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curretElement.type = ']';
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curretElement.append(expChar);
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this.elements.add(curretElement);
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curretElement = null;
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currentElement = new Element();
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currentElement.type = ']';
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currentElement.append(expChar);
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this.elements.add(currentElement);
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currentElement = null;
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break;
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case '{':
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if (curretElement != null) {
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if (curretElement.type == '\'') {
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curretElement.append(expChar);
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if (currentElement != null) {
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if (currentElement.type == '\'') {
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currentElement.append(expChar);
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continue;
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} else {
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this.elements.add(curretElement);
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this.elements.add(currentElement);
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}
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}
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curretElement = new Element();
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curretElement.type = '{';
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curretElement.append(expChar);
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this.elements.add(curretElement);
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curretElement = null;
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currentElement = new Element();
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currentElement.type = '{';
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currentElement.append(expChar);
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this.elements.add(currentElement);
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currentElement = null;
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break;
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case '}':
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if (curretElement != null) {
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if (curretElement.type == '\'') {
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curretElement.append(expChar);
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if (currentElement != null) {
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if (currentElement.type == '\'') {
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currentElement.append(expChar);
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continue;
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} else {
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this.elements.add(curretElement);
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this.elements.add(currentElement);
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}
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}
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curretElement = new Element();
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curretElement.type = '}';
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curretElement.append(expChar);
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this.elements.add(curretElement);
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curretElement = null;
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currentElement = new Element();
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currentElement.type = '}';
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currentElement.append(expChar);
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this.elements.add(currentElement);
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currentElement = null;
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break;
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case ',':
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if (curretElement != null) {
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if (curretElement.type == '\'') {
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curretElement.append(expChar);
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if (currentElement != null) {
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if (currentElement.type == '\'') {
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currentElement.append(expChar);
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continue;
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} else {
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this.elements.add(curretElement);
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this.elements.add(currentElement);
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}
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}
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curretElement = new Element();
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curretElement.type = ',';
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curretElement.append(expChar);
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this.elements.add(curretElement);
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curretElement = null;
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currentElement = new Element();
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currentElement.type = ',';
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currentElement.append(expChar);
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this.elements.add(currentElement);
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currentElement = null;
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break;
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default:
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if (curretElement == null) {
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curretElement = new Element();
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curretElement.type = 'F';
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curretElement.append(expChar);
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if (currentElement == null) {
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currentElement = new Element();
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currentElement.type = 'F';
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currentElement.append(expChar);
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} else if (curretElement.type == 'F') {
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curretElement.append(expChar);
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} else if (currentElement.type == 'F') {
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currentElement.append(expChar);
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} else if (curretElement.type == '\'') {
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curretElement.append(expChar);
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} else if (currentElement.type == '\'') {
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currentElement.append(expChar);
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} else {
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this.elements.add(curretElement);
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curretElement = new Element();
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curretElement.type = 'F';
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curretElement.append(expChar);
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this.elements.add(currentElement);
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currentElement = new Element();
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currentElement.type = 'F';
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currentElement.append(expChar);
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}
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}
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}
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if (curretElement != null) {
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this.elements.add(curretElement);
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if (currentElement != null) {
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this.elements.add(currentElement);
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}
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}
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@ -359,7 +359,7 @@ public class IKQueryExpressionParser {
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throw new IllegalStateException("表达式异常： = 或 ： 号丢失");
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}
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Element e3 = this.elements.get(i + 2);
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//处理 = 和 ： 运算
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// 处理 = 和 ： 运算
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if ('\'' == e3.type) {
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i += 2;
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if ('=' == e2.type) {
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@ -367,14 +367,14 @@ public class IKQueryExpressionParser {
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this.querys.push(tQuery);
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} else {
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String keyword = e3.toString();
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//SWMCQuery Here
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// SWMCQuery Here
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Query _SWMCQuery = SWMCQueryBuilder.create(e.toString(), keyword);
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this.querys.push(_SWMCQuery);
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}
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} else if ('[' == e3.type || '{' == e3.type) {
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i += 2;
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//处理 [] 和 {}
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// 处理 [] 和 {}
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LinkedList<Element> eQueue = new LinkedList<>();
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eQueue.add(e3);
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for (i++; i < this.elements.size(); i++) {
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@ -384,7 +384,7 @@ public class IKQueryExpressionParser {
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break;
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}
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}
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//翻译RangeQuery
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// 翻译RangeQuery
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Query rangeQuery = this.toTermRangeQuery(e, eQueue);
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this.querys.push(rangeQuery);
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} else {
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@ -475,10 +475,10 @@ public class IKQueryExpressionParser {
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}
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} else {
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//q1 instanceof TermQuery
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//q1 instanceof TermRangeQuery
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//q1 instanceof PhraseQuery
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//others
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// q1 instanceof TermQuery
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// q1 instanceof TermRangeQuery
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// q1 instanceof PhraseQuery
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// others
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resultQuery.add(q1, Occur.MUST);
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}
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}
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@ -496,10 +496,10 @@ public class IKQueryExpressionParser {
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}
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} else {
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//q1 instanceof TermQuery
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//q1 instanceof TermRangeQuery
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//q1 instanceof PhraseQuery
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//others
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// q1 instanceof TermQuery
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// q1 instanceof TermRangeQuery
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// q1 instanceof PhraseQuery
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// others
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resultQuery.add(q2, Occur.MUST);
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}
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}
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@ -518,10 +518,10 @@ public class IKQueryExpressionParser {
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}
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} else {
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//q1 instanceof TermQuery
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//q1 instanceof TermRangeQuery
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//q1 instanceof PhraseQuery
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//others
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// q1 instanceof TermQuery
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// q1 instanceof TermRangeQuery
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// q1 instanceof PhraseQuery
|
||||
// others
|
||||
resultQuery.add(q1, Occur.SHOULD);
|
||||
}
|
||||
}
|
||||
|
|
@ -538,10 +538,10 @@ public class IKQueryExpressionParser {
|
|||
resultQuery.add(q2, Occur.SHOULD);
|
||||
}
|
||||
} else {
|
||||
//q2 instanceof TermQuery
|
||||
//q2 instanceof TermRangeQuery
|
||||
//q2 instanceof PhraseQuery
|
||||
//others
|
||||
// q2 instanceof TermQuery
|
||||
// q2 instanceof TermRangeQuery
|
||||
// q2 instanceof PhraseQuery
|
||||
// others
|
||||
resultQuery.add(q2, Occur.SHOULD);
|
||||
|
||||
}
|
||||
|
|
@ -563,10 +563,10 @@ public class IKQueryExpressionParser {
|
|||
}
|
||||
|
||||
} else {
|
||||
//q1 instanceof TermQuery
|
||||
//q1 instanceof TermRangeQuery
|
||||
//q1 instanceof PhraseQuery
|
||||
//others
|
||||
// q1 instanceof TermQuery
|
||||
// q1 instanceof TermRangeQuery
|
||||
// q1 instanceof PhraseQuery
|
||||
// others
|
||||
resultQuery.add(q1, Occur.MUST);
|
||||
}
|
||||
|
||||
|
|
@ -584,7 +584,7 @@ public class IKQueryExpressionParser {
|
|||
boolean includeLast;
|
||||
String firstValue;
|
||||
String lastValue = null;
|
||||
//检查第一个元素是否是[或者{
|
||||
// 检查第一个元素是否是[或者{
|
||||
Element first = elements.getFirst();
|
||||
if ('[' == first.type) {
|
||||
includeFirst = true;
|
||||
|
|
@ -593,7 +593,7 @@ public class IKQueryExpressionParser {
|
|||
} else {
|
||||
throw new IllegalStateException("表达式异常");
|
||||
}
|
||||
//检查最后一个元素是否是]或者}
|
||||
// 检查最后一个元素是否是]或者}
|
||||
Element last = elements.getLast();
|
||||
if (']' == last.type) {
|
||||
includeLast = true;
|
||||
|
|
@ -605,7 +605,7 @@ public class IKQueryExpressionParser {
|
|||
if (elements.size() < 4 || elements.size() > 5) {
|
||||
throw new IllegalStateException("表达式异常, RangeQuery 错误");
|
||||
}
|
||||
//读出中间部分
|
||||
// 读出中间部分
|
||||
Element e2 = elements.get(1);
|
||||
if ('\'' == e2.type) {
|
||||
firstValue = e2.toString();
|
||||
|
|
@ -673,7 +673,7 @@ public class IKQueryExpressionParser {
|
|||
* @author linliangyi
|
||||
* May 20, 2010
|
||||
*/
|
||||
private class Element {
|
||||
private static class Element {
|
||||
char type = 0;
|
||||
StringBuffer eleTextBuff;
|
||||
|
||||
|
|
@ -692,11 +692,9 @@ public class IKQueryExpressionParser {
|
|||
|
||||
public static void main(String[] args) {
|
||||
IKQueryExpressionParser parser = new IKQueryExpressionParser();
|
||||
//String ikQueryExp = "newsTitle:'的两款《魔兽世界》插件Bigfoot和月光宝盒'";
|
||||
String ikQueryExp = "(id='ABcdRf' && date:{'20010101','20110101'} && keyword:'魔兽中国') || (content:'KSHT-KSH-A001-18' || ulr='www.ik.com') - name:'林良益'";
|
||||
Query result = parser.parseExp(ikQueryExp);
|
||||
System.out.println(result);
|
||||
|
||||
}
|
||||
|
||||
}
|
||||
|
|
|
|||
|
|
@ -45,6 +45,7 @@ import java.util.List;
|
|||
*
|
||||
* @author linliangyi
|
||||
*/
|
||||
@SuppressWarnings("unused")
|
||||
class SWMCQueryBuilder {
|
||||
|
||||
/**
|
||||
|
|
@ -56,9 +57,9 @@ class SWMCQueryBuilder {
|
|||
if (fieldName == null || keywords == null) {
|
||||
throw new IllegalArgumentException("参数 fieldName 、 keywords 不能为null.");
|
||||
}
|
||||
//1.对keywords进行分词处理
|
||||
// 1.对keywords进行分词处理
|
||||
List<Lexeme> lexemes = doAnalyze(keywords);
|
||||
//2.根据分词结果，生成SWMCQuery
|
||||
// 2.根据分词结果，生成SWMCQuery
|
||||
return getSWMCQuery(fieldName, lexemes);
|
||||
}
|
||||
|
||||
|
|
@ -84,20 +85,20 @@ class SWMCQueryBuilder {
|
|||
* 根据分词结果生成SWMC搜索
|
||||
*/
|
||||
private static Query getSWMCQuery(String fieldName, List<Lexeme> lexemes) {
|
||||
//构造SWMC的查询表达式
|
||||
// 构造SWMC的查询表达式
|
||||
StringBuilder keywordBuffer = new StringBuilder();
|
||||
//精简的SWMC的查询表达式
|
||||
// 精简的SWMC的查询表达式
|
||||
StringBuilder keywordBuffer_Short = new StringBuilder();
|
||||
//记录最后词元长度
|
||||
// 记录最后词元长度
|
||||
int lastLexemeLength = 0;
|
||||
//记录最后词元结束位置
|
||||
// 记录最后词元结束位置
|
||||
int lastLexemeEnd = -1;
|
||||
|
||||
int shortCount = 0;
|
||||
int totalCount = 0;
|
||||
for (Lexeme l : lexemes) {
|
||||
totalCount += l.getLength();
|
||||
//精简表达式
|
||||
// 精简表达式
|
||||
if (l.getLength() > 1) {
|
||||
keywordBuffer_Short.append(' ').append(l.getLexemeText());
|
||||
shortCount += l.getLength();
|
||||
|
|
@ -106,7 +107,7 @@ class SWMCQueryBuilder {
|
|||
if (lastLexemeLength == 0) {
|
||||
keywordBuffer.append(l.getLexemeText());
|
||||
} else if (lastLexemeLength == 1 && l.getLength() == 1
|
||||
&& lastLexemeEnd == l.getBeginPosition()) {//单字位置相邻，长度为一，合并)
|
||||
&& lastLexemeEnd == l.getBeginPosition()) {// 单字位置相邻，长度为一，合并)
|
||||
keywordBuffer.append(l.getLexemeText());
|
||||
} else {
|
||||
keywordBuffer.append(' ').append(l.getLexemeText());
|
||||
|
|
@ -116,10 +117,10 @@ class SWMCQueryBuilder {
|
|||
lastLexemeEnd = l.getEndPosition();
|
||||
}
|
||||
|
||||
//借助lucene queryparser 生成SWMC Query
|
||||
// 借助lucene queryparser 生成SWMC Query
|
||||
QueryParser qp = new QueryParser(fieldName, new StandardAnalyzer());
|
||||
qp.setAutoGeneratePhraseQueries(false);
|
||||
qp.setDefaultOperator(QueryParser.AND_OPERATOR);
|
||||
qp.setAutoGeneratePhraseQueries(true);
|
||||
|
||||
if ((shortCount * 1.0f / totalCount) > 0.5f) {
|
||||
try {
|
||||
|
|
|
|||
Loading…
Reference in New Issue