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https://github.com/ebean-orm/ebean.git
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No effective change - format only
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rbygrave
+159
-161
@@ -3,198 +3,196 @@ package com.avaje.ebeaninternal.server.querydefn;
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import javax.persistence.PersistenceException;
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/**
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* Parses a Object relational query statement into a OrmQueryDetail and
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* OrmQueryAttributes.
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* Parses a Object relational query statement into a OrmQueryDetail and OrmQueryAttributes.
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* <p>
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* The reason they are split into detail and attributes is that the autoFetch
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* feature is used to replace the OrmQueryDetail leaving the attributes
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* unchanged.
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* The reason they are split into detail and attributes is that the autoFetch feature is used to
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* replace the OrmQueryDetail leaving the attributes unchanged.
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* </p>
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*/
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public class OrmQueryDetailParser {
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private final OrmQueryDetail detail = new OrmQueryDetail();
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private final OrmQueryDetail detail = new OrmQueryDetail();
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private int maxRows;
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private int maxRows;
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private int firstRow;
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private int firstRow;
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private String rawWhereClause;
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private String rawWhereClause;
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private String rawOrderBy;
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private String rawOrderBy;
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private final SimpleTextParser parser;
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private final SimpleTextParser parser;
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public OrmQueryDetailParser(String oql) {
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this.parser = new SimpleTextParser(oql);
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public OrmQueryDetailParser(String oql) {
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this.parser = new SimpleTextParser(oql);
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}
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public void parse() throws PersistenceException {
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parser.nextWord();
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processInitial();
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}
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protected void assign(DefaultOrmQuery<?> query) {
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query.setOrmQueryDetail(detail);
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query.setFirstRow(firstRow);
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query.setMaxRows(maxRows);
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query.setRawWhereClause(rawWhereClause);
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query.order(rawOrderBy);
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}
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private void processInitial() {
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if (parser.isMatch("find")) {
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OrmQueryProperties props = readFindFetch();
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detail.setBase(props);
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} else {
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process();
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}
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while (!parser.isFinished()) {
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process();
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}
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}
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public void parse() throws PersistenceException {
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private boolean isFetch() {
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return parser.isMatch("fetch") || parser.isMatch("join");
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}
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private void process() {
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if (isFetch()) {
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OrmQueryProperties props = readFindFetch();
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detail.putFetchPath(props);
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} else if (parser.isMatch("where")) {
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readWhere();
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} else if (parser.isMatch("order", "by")) {
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readOrderBy();
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} else if (parser.isMatch("limit")) {
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readLimit();
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} else {
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throw new PersistenceException("Query expected 'fetch', 'where','order by' or 'limit' keyword but got ["
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+ parser.getWord() + "] \r " + parser.getOql());
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}
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}
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private void readLimit() {
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try {
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String maxLimit = parser.nextWord();
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maxRows = Integer.parseInt(maxLimit);
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String offsetKeyword = parser.nextWord();
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if (offsetKeyword != null) {
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if (!parser.isMatch("offset")) {
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throw new PersistenceException("expected offset keyword but got " + parser.getWord());
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}
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String firstRowLimit = parser.nextWord();
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firstRow = Integer.parseInt(firstRowLimit);
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parser.nextWord();
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processInitial();
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}
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} catch (NumberFormatException e) {
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String msg = "Expected an integer for maxRows or firstRows in limit offset clause";
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throw new PersistenceException(msg, e);
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}
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}
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protected void assign(DefaultOrmQuery<?> query) {
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query.setOrmQueryDetail(detail);
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query.setFirstRow(firstRow);
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query.setMaxRows(maxRows);
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query.setRawWhereClause(rawWhereClause);
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query.order(rawOrderBy);
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}
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private void readOrderBy() {
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// read the by
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parser.nextWord();
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private void processInitial() {
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if (parser.isMatch("find")) {
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OrmQueryProperties props = readFindFetch();
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detail.setBase(props);
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} else {
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process();
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}
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while (!parser.isFinished()) {
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process();
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StringBuilder sb = new StringBuilder();
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while (parser.nextWord() != null) {
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if (parser.isMatch("limit")) {
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break;
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} else {
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String w = parser.getWord();
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if (!w.startsWith("(")) {
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sb.append(" ");
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}
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sb.append(w);
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}
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}
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rawOrderBy = sb.toString().trim();
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if (!parser.isFinished()) {
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readLimit();
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}
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}
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private void readWhere() {
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int nextMode = 0;
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StringBuilder sb = new StringBuilder();
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while ((parser.nextWord()) != null) {
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if (parser.isMatch("order", "by")) {
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nextMode = 1;
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break;
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} else if (parser.isMatch("limit")) {
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nextMode = 2;
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break;
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} else {
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sb.append(" ").append(parser.getWord());
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}
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}
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String whereClause = sb.toString().trim();
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if (whereClause.length() > 0) {
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rawWhereClause = whereClause;
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}
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private boolean isFetch() {
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return parser.isMatch("fetch") || parser.isMatch("join");
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if (nextMode == 1) {
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readOrderBy();
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} else if (nextMode == 2) {
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readLimit();
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}
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}
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private void process() {
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if (isFetch()) {
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OrmQueryProperties props = readFindFetch();
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detail.putFetchPath(props);
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private OrmQueryProperties readFindFetch() {
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} else if (parser.isMatch("where")) {
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readWhere();
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boolean readAlias = false;
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} else if (parser.isMatch("order", "by")) {
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readOrderBy();
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} else if (parser.isMatch("limit")) {
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readLimit();
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} else {
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throw new PersistenceException("Query expected 'fetch', 'where','order by' or 'limit' keyword but got ["
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+ parser.getWord() + "] \r " + parser.getOql());
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}
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}
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private void readLimit() {
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try {
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String maxLimit = parser.nextWord();
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maxRows = Integer.parseInt(maxLimit);
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String offsetKeyword = parser.nextWord();
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if (offsetKeyword != null) {
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if (!parser.isMatch("offset")) {
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throw new PersistenceException("expected offset keyword but got " + parser.getWord());
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}
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String firstRowLimit = parser.nextWord();
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firstRow = Integer.parseInt(firstRowLimit);
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parser.nextWord();
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}
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} catch (NumberFormatException e) {
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String msg = "Expected an integer for maxRows or firstRows in limit offset clause";
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throw new PersistenceException(msg, e);
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}
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}
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private void readOrderBy() {
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// read the by
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String props = null;
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String path = parser.nextWord();
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String token = null;
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while ((token = parser.nextWord()) != null) {
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if (!readAlias && parser.isMatch("as")) {
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// next token is alias
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parser.nextWord();
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readAlias = true;
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StringBuilder sb = new StringBuilder();
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while (parser.nextWord() != null) {
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if (parser.isMatch("limit")) {
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break;
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} else {
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String w = parser.getWord();
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if (!w.startsWith("(")) {
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sb.append(" ");
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}
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sb.append(w);
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}
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}
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rawOrderBy = sb.toString().trim();
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} else if ('(' == token.charAt(0)) {
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props = token;
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parser.nextWord();
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break;
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if (!parser.isFinished()) {
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readLimit();
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}
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} else if (isFindFetchEnd()) {
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break;
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} else if (!readAlias) {
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readAlias = true;
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} else {
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throw new PersistenceException("Expected (props) or new 'fetch' 'where' but got " + token);
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}
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}
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private void readWhere() {
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int nextMode = 0;
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StringBuilder sb = new StringBuilder();
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while ((parser.nextWord()) != null) {
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if (parser.isMatch("order", "by")) {
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nextMode = 1;
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break;
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} else if (parser.isMatch("limit")) {
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nextMode = 2;
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break;
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} else {
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sb.append(" ").append(parser.getWord());
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}
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}
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String whereClause = sb.toString().trim();
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if (whereClause.length() > 0) {
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rawWhereClause = whereClause;
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}
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if (nextMode == 1) {
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readOrderBy();
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} else if (nextMode == 2) {
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readLimit();
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}
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if (props != null) {
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props = props.substring(1, props.length() - 1);
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}
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return new OrmQueryProperties(path, props);
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}
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private OrmQueryProperties readFindFetch() {
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boolean readAlias = false;
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String props = null;
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String path = parser.nextWord();
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String token = null;
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while ((token = parser.nextWord()) != null) {
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if (!readAlias && parser.isMatch("as")) {
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// next token is alias
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parser.nextWord();
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readAlias = true;
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} else if ('(' == token.charAt(0)) {
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props = token;
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parser.nextWord();
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break;
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} else if (isFindFetchEnd()) {
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break;
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} else if (!readAlias) {
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readAlias = true;
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} else {
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throw new PersistenceException("Expected (props) or new 'fetch' 'where' but got " + token);
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}
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}
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if (props != null) {
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props = props.substring(1, props.length() - 1);
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}
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return new OrmQueryProperties(path, props);
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private boolean isFindFetchEnd() {
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if (isFetch()) {
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return true;
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}
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private boolean isFindFetchEnd() {
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if (isFetch()) {
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return true;
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}
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if (parser.isMatch("where")) {
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return true;
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}
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if (parser.isMatch("order", "by")) {
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return true;
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}
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return false;
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if (parser.isMatch("where")) {
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return true;
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}
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if (parser.isMatch("order", "by")) {
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return true;
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}
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return false;
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}
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}
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