Revision 44769 trunk/org.gvsig.desktop/org.gvsig.desktop.compat.cdc/org.gvsig.fmap.dal/org.gvsig.fmap.dal.impl/src/main/java/org/gvsig/expressionevaluator/impl/grammars/DataAccessGrammarFactory.java
| DataAccessGrammarFactory.java | ||
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package org.gvsig.expressionevaluator.impl.grammars; |
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import java.util.UUID; |
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import org.apache.commons.lang3.StringUtils; |
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import org.gvsig.expressionevaluator.Code; |
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import org.gvsig.expressionevaluator.CodeBuilder; |
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import org.gvsig.expressionevaluator.Codes; |
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import org.gvsig.expressionevaluator.ExpressionEvaluatorLocator; |
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import org.gvsig.expressionevaluator.ExpressionEvaluatorManager; |
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import org.gvsig.expressionevaluator.ExpressionSyntaxException; |
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import org.gvsig.expressionevaluator.Grammar; |
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import org.gvsig.expressionevaluator.Statement; |
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import org.gvsig.expressionevaluator.Statement.ArgsBuilder; |
| ... | ... | |
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@Override |
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public Codes build(StatementContext context) {
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context.trace(this.toString() + ".build"); |
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int n; |
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BaseCodes argsX; |
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CodeBuilder codeBuilder = context.getCodeBuilder(); |
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BaseCodes args = (BaseCodes) codeBuilder.args(); |
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Code columns = context.getCode("COLUMNS");
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Code table = context.getCode("TABLE");
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Code where = context.getCode("WHERE");
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// Code order = context.getCode("ORDER");
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// Code order_mode = context.getCode("ORDER_MODE");
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Code limit = context.getCode("LIMIT");
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if (columns == null) {
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throw new ExpressionSyntaxException(); |
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} |
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Callable tuple = codeBuilder.tuple(); |
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args.add(tuple); |
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String s = (String) ((Code.Constant) columns).value(); |
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if (!StringUtils.equalsIgnoreCase(s, "*")) {
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((BaseCodes) (tuple.parameters())).add(codeBuilder.constant(1)); |
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} |
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args.add(columns); |
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Code table = context.getCode("TABLE");
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args.add(codeBuilder.identifier((String) ((Code.Constant) table).value())); |
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Code where = context.getCode("WHERE");
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if (where == null) {
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args.add(codeBuilder.constant(null)); |
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} else {
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args.add(where); |
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} |
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int n = 1;
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BaseCodes argsX = (BaseCodes) codeBuilder.args();
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n = 1; |
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argsX = (BaseCodes) codeBuilder.args(); |
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while (true) {
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String argNameX = "ORDER" + String.valueOf(n); |
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Code code = context.getCode(argNameX); |
| ... | ... | |
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} |
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args.add(codeBuilder.tuple(argsX)); |
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Code limit = context.getCode("LIMIT");
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if (limit == null) {
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args.add(codeBuilder.constant(null)); |
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} else {
|
| ... | ... | |
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public Grammar create(Object... parameters) {
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ExpressionEvaluatorManager manager = ExpressionEvaluatorLocator.getManager(); |
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if (this.grammar == null) {
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CodeBuilder codeBuilder = manager.createCodeBuilder(); |
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Grammar theGrammar = manager.createGrammar(this.getName()); |
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Statement stmt; |
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theGrammar.addReservedWord("EXISTS");
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theGrammar.addReservedWord("SELECT");
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theGrammar.addReservedWord("FROM");
|
| ... | ... | |
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stmt = theGrammar.createStatement("SELECT");
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stmt.addRule(stmt.require_any_token("SELECT"));
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stmt.addRule(stmt.switch_token() |
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.addCase("*", stmt.set_expression("COLUMNS", "*"))
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.addCase("1", stmt.set_expression("COLUMNS", "1"))
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.addDefault(stmt.fail()) |
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stmt.addRule(stmt.optional_any_token("*")
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.addRuleOnTrue(stmt.set_expression("COLUMNS", codeBuilder.tuple()))
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.addRuleOnFalse(stmt.require_identifiers(",").capture_as("COLUMNS"))
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); |
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stmt.addRule(stmt.require_any_token("FROM"));
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stmt.addRule(stmt.require_identifier().capture_as("TABLE"));
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