svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.library / org.gvsig.expressionevaluator / org.gvsig.expressionevaluator.lib / org.gvsig.expressionevaluator.lib.impl / src / main / java / org / gvsig / expressionevaluator / impl / DefaultCodeBuilder.java @ 44052
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| 1 | 43512 | jjdelcerro | package org.gvsig.expressionevaluator.impl; |
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| 2 | |||
| 3 | import java.util.ArrayList; |
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| 4 | import java.util.Iterator; |
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| 5 | import java.util.List; |
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| 6 | 43519 | jjdelcerro | import org.apache.commons.lang3.StringUtils; |
| 7 | 43512 | jjdelcerro | import org.gvsig.expressionevaluator.Code; |
| 8 | import static org.gvsig.expressionevaluator.Code.CALLER; |
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| 9 | import static org.gvsig.expressionevaluator.Code.CONSTANT; |
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| 10 | 44006 | jjdelcerro | import static org.gvsig.expressionevaluator.Code.IDENTIFIER; |
| 11 | import static org.gvsig.expressionevaluator.Code.UNDEFINED; |
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| 12 | 43512 | jjdelcerro | import org.gvsig.expressionevaluator.Code.Caller; |
| 13 | import org.gvsig.expressionevaluator.Code.Caller.Arguments; |
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| 14 | import org.gvsig.expressionevaluator.Code.Constant; |
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| 15 | import org.gvsig.expressionevaluator.Code.Identifier; |
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| 16 | 43939 | jjdelcerro | import org.gvsig.expressionevaluator.Code.Method; |
| 17 | 43512 | jjdelcerro | import org.gvsig.expressionevaluator.CodeBuilder; |
| 18 | import org.gvsig.expressionevaluator.Function; |
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| 19 | 43521 | jjdelcerro | import org.gvsig.expressionevaluator.Interpreter; |
| 20 | 44009 | jjdelcerro | import org.gvsig.fmap.geom.Geometry; |
| 21 | 43512 | jjdelcerro | import org.gvsig.tools.exception.BaseException; |
| 22 | import org.gvsig.tools.visitor.Visitor; |
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| 23 | |||
| 24 | 44009 | jjdelcerro | @SuppressWarnings("UseSpecificCatch") |
| 25 | public class DefaultCodeBuilder implements CodeBuilder { |
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| 26 | 43512 | jjdelcerro | |
| 27 | public class BaseCode implements Code { |
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| 28 | |||
| 29 | @Override
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| 30 | public int code() { |
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| 31 | return UNDEFINED;
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| 32 | } |
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| 33 | |||
| 34 | @Override
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| 35 | public void accept(Visitor visitor) throws BaseException { |
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| 36 | visitor.visit(this);
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| 37 | } |
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| 38 | |||
| 39 | } |
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| 40 | |||
| 41 | class BaseConstant extends BaseCode implements Constant { |
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| 42 | |||
| 43 | private final Object value; |
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| 44 | |||
| 45 | public BaseConstant(Object value) { |
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| 46 | this.value = value;
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| 47 | } |
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| 48 | |||
| 49 | @Override
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| 50 | public int code() { |
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| 51 | return CONSTANT;
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| 52 | } |
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| 53 | |||
| 54 | @Override
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| 55 | public Object value() { |
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| 56 | return this.value; |
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| 57 | } |
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| 58 | |||
| 59 | 43521 | jjdelcerro | @Override
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| 60 | public String toString() { |
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| 61 | StringBuilder builder = new StringBuilder(); |
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| 62 | Object v = this.value(); |
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| 63 | if( v instanceof CharSequence ) { |
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| 64 | v = StringUtils.wrap(v.toString(), "'");
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| 65 | 44009 | jjdelcerro | builder.append(v); |
| 66 | |||
| 67 | } else if( v instanceof Geometry ) { |
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| 68 | try {
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| 69 | builder.append("'");
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| 70 | builder.append(((Geometry) v).convertToWKT()); |
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| 71 | builder.append("'::geometry");
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| 72 | } catch (Exception ex) { |
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| 73 | builder.append("'UNKNOW'::geometry");
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| 74 | } |
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| 75 | |||
| 76 | } else {
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| 77 | builder.append(v); |
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| 78 | 43521 | jjdelcerro | } |
| 79 | return builder.toString();
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| 80 | } |
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| 81 | |||
| 82 | 43512 | jjdelcerro | } |
| 83 | |||
| 84 | public class BaseIdentifier extends BaseCode implements Identifier { |
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| 85 | |||
| 86 | String name;
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| 87 | |||
| 88 | public BaseIdentifier(String name) { |
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| 89 | this.name = name;
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| 90 | } |
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| 91 | |||
| 92 | @Override
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| 93 | public int code() { |
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| 94 | return IDENTIFIER;
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| 95 | } |
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| 96 | |||
| 97 | @Override
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| 98 | public String name() { |
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| 99 | return this.name; |
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| 100 | } |
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| 101 | |||
| 102 | 43521 | jjdelcerro | @Override
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| 103 | public String toString() { |
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| 104 | StringBuilder builder = new StringBuilder(); |
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| 105 | 44006 | jjdelcerro | builder.append("\"");
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| 106 | 43521 | jjdelcerro | builder.append(this.name());
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| 107 | 44006 | jjdelcerro | builder.append("\"");
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| 108 | 43521 | jjdelcerro | return builder.toString();
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| 109 | } |
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| 110 | |||
| 111 | 43512 | jjdelcerro | } |
| 112 | |||
| 113 | public class BaseArguments implements Arguments { |
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| 114 | |||
| 115 | private final List<Code> args; |
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| 116 | |||
| 117 | public BaseArguments() {
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| 118 | this.args = new ArrayList<>(); |
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| 119 | } |
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| 120 | |||
| 121 | @Override
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| 122 | public int count() { |
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| 123 | if( args == null ) { |
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| 124 | return 0; |
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| 125 | } |
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| 126 | return this.args.size(); |
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| 127 | } |
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| 128 | |||
| 129 | public void add(Code arg) { |
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| 130 | this.args.add(arg);
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| 131 | } |
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| 132 | |||
| 133 | @Override
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| 134 | public Iterator<Code> iterator() { |
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| 135 | return this.args.iterator(); |
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| 136 | } |
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| 137 | |||
| 138 | @Override
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| 139 | public Code get(int n) { |
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| 140 | return this.args.get(n); |
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| 141 | } |
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| 142 | |||
| 143 | @Override
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| 144 | public void accept(Visitor visitor) throws BaseException { |
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| 145 | 43521 | jjdelcerro | for( Code arg : this.args ) { |
| 146 | 43512 | jjdelcerro | visitor.visit(arg); |
| 147 | } |
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| 148 | } |
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| 149 | |||
| 150 | 43521 | jjdelcerro | @Override
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| 151 | public String toString() { |
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| 152 | if( args != null ) { |
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| 153 | StringBuilder builder = new StringBuilder(); |
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| 154 | boolean skipcoma = true; |
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| 155 | for( Code arg : args ) {
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| 156 | if( skipcoma ) {
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| 157 | skipcoma = false;
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| 158 | } else {
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| 159 | builder.append(", ");
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| 160 | } |
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| 161 | builder.append(arg.toString()); |
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| 162 | } |
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| 163 | return builder.toString();
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| 164 | } |
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| 165 | return ""; |
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| 166 | } |
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| 167 | |||
| 168 | 43512 | jjdelcerro | } |
| 169 | |||
| 170 | public class BaseCaller extends BaseCode implements Caller { |
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| 171 | |||
| 172 | private final String name; |
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| 173 | private final Arguments args; |
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| 174 | private Function function;
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| 175 | private final int type; |
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| 176 | |||
| 177 | public BaseCaller(String name, int type, Arguments args) { |
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| 178 | this.name = name;
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| 179 | this.args = args;
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| 180 | this.type = type;
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| 181 | this.function = null; |
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| 182 | } |
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| 183 | |||
| 184 | @Override
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| 185 | public int code() { |
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| 186 | return CALLER;
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| 187 | } |
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| 188 | |||
| 189 | @Override
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| 190 | 43521 | jjdelcerro | public Object call(Interpreter interpreter, Object[] args) throws Exception { |
| 191 | return this.function.call(interpreter, args); |
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| 192 | 43512 | jjdelcerro | } |
| 193 | |||
| 194 | @Override
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| 195 | public String name() { |
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| 196 | return this.name; |
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| 197 | } |
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| 198 | |||
| 199 | @Override
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| 200 | public Function function() {
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| 201 | return this.function; |
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| 202 | } |
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| 203 | |||
| 204 | @Override
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| 205 | public Function function(Function function) {
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| 206 | this.function = function;
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| 207 | return this.function; |
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| 208 | } |
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| 209 | |||
| 210 | @Override
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| 211 | public Code.Caller.Arguments args() {
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| 212 | return this.args; |
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| 213 | } |
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| 214 | |||
| 215 | @Override
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| 216 | public int type() { |
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| 217 | return this.type; |
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| 218 | } |
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| 219 | |||
| 220 | @Override
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| 221 | public void accept(Visitor visitor) throws BaseException { |
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| 222 | visitor.visit(this);
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| 223 | 44052 | omartinez | if(this.args!=null) { |
| 224 | this.args.accept(visitor);
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| 225 | } |
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| 226 | 43512 | jjdelcerro | } |
| 227 | |||
| 228 | 43521 | jjdelcerro | @Override
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| 229 | public String toString() { |
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| 230 | StringBuilder builder = new StringBuilder(); |
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| 231 | builder.append(this.name());
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| 232 | builder.append("(");
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| 233 | if( this.args()!=null ) { |
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| 234 | builder.append(this.args().toString());
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| 235 | } |
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| 236 | builder.append(")");
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| 237 | return builder.toString();
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| 238 | } |
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| 239 | |||
| 240 | 43512 | jjdelcerro | } |
| 241 | |||
| 242 | 43939 | jjdelcerro | public class BaseMethod extends BaseCaller implements Method { |
| 243 | |||
| 244 | private final Code obj; |
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| 245 | private final String methodname; |
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| 246 | |||
| 247 | public BaseMethod(Code obj, String methodname, Arguments args) { |
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| 248 | super(methodname, FUNCTION, args);
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| 249 | this.obj = obj;
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| 250 | this.methodname = methodname;
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| 251 | } |
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| 252 | |||
| 253 | @Override
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| 254 | public int code() { |
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| 255 | return METHOD;
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| 256 | } |
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| 257 | |||
| 258 | @Override
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| 259 | public String methodname() { |
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| 260 | return this.methodname; |
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| 261 | } |
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| 262 | |||
| 263 | @Override
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| 264 | public Code obj() {
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| 265 | return this.obj; |
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| 266 | } |
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| 267 | |||
| 268 | @Override
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| 269 | public String toString() { |
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| 270 | StringBuilder builder = new StringBuilder(); |
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| 271 | builder.append(this.obj.toString());
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| 272 | builder.append("->");
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| 273 | builder.append(this.methodname());
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| 274 | builder.append("(");
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| 275 | if( this.args()!=null ) { |
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| 276 | builder.append(this.args().toString());
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| 277 | } |
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| 278 | builder.append(")");
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| 279 | return builder.toString();
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| 280 | } |
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| 281 | } |
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| 282 | |||
| 283 | 43512 | jjdelcerro | @Override
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| 284 | 43809 | jjdelcerro | public CodeBuilder clone() throws CloneNotSupportedException { |
| 285 | // This implementation of CodeBuilder does not maintain state, so
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| 286 | // we only call the super class.
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| 287 | DefaultCodeBuilder other = (DefaultCodeBuilder) super.clone();
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| 288 | return other;
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| 289 | } |
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| 290 | |||
| 291 | @Override
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| 292 | 43512 | jjdelcerro | public Constant constant(Object value) { |
| 293 | return new BaseConstant(value); |
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| 294 | } |
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| 295 | |||
| 296 | @Override
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| 297 | public Identifier identifier(String name) { |
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| 298 | return new BaseIdentifier(name); |
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| 299 | } |
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| 300 | |||
| 301 | @Override
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| 302 | public Caller.Arguments args() {
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| 303 | return new BaseArguments(); |
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| 304 | } |
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| 305 | |||
| 306 | @Override
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| 307 | public Caller function(String name, int type, Arguments args) { |
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| 308 | return new BaseCaller(name, type, args); |
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| 309 | } |
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| 310 | |||
| 311 | @Override
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| 312 | public Caller function(String name, Arguments args) { |
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| 313 | return function(name, Caller.FUNCTION, args);
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| 314 | } |
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| 315 | 43939 | jjdelcerro | |
| 316 | 43512 | jjdelcerro | @Override
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| 317 | 43939 | jjdelcerro | public Code method(Code obj, String methodname, Arguments methodargs) { |
| 318 | Method m = new BaseMethod(obj, methodname, methodargs); |
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| 319 | return m;
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| 320 | } |
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| 321 | |||
| 322 | @Override
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| 323 | 43512 | jjdelcerro | public Caller operator(String name, Code arg1) { |
| 324 | Arguments args = args(); |
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| 325 | 43809 | jjdelcerro | ((BaseArguments)args).add(arg1); |
| 326 | 43512 | jjdelcerro | return function(name, Caller.UNARY_OPERATOR, args);
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| 327 | } |
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| 328 | |||
| 329 | @Override
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| 330 | public Caller operator(String name, Code arg1, Code arg2) { |
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| 331 | Arguments args = args(); |
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| 332 | 43809 | jjdelcerro | ((BaseArguments)args).add(arg1); |
| 333 | ((BaseArguments)args).add(arg2); |
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| 334 | 43512 | jjdelcerro | return function(name, Caller.BINARY_OPERATOR, args);
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| 335 | } |
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| 336 | |||
| 337 | @Override
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| 338 | public Code not(Code op1) {
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| 339 | return operator("not", op1); |
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| 340 | } |
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| 341 | |||
| 342 | @Override
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| 343 | public Code add(Code op1, Code op2) {
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| 344 | return operator("+", op1, op2); |
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| 345 | } |
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| 346 | |||
| 347 | @Override
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| 348 | public Code subst(Code op1, Code op2) {
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| 349 | return operator("-", op1, op2); |
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| 350 | } |
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| 351 | |||
| 352 | @Override
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| 353 | public Code mult(Code op1, Code op2) {
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| 354 | return operator("*", op1, op2); |
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| 355 | } |
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| 356 | |||
| 357 | @Override
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| 358 | public Code div(Code op1, Code op2) {
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| 359 | return operator("/", op1, op2); |
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| 360 | } |
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| 361 | |||
| 362 | @Override
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| 363 | public Code mod(Code op1, Code op2) {
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| 364 | return operator("%", op1, op2); |
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| 365 | } |
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| 366 | |||
| 367 | @Override
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| 368 | public Code or(Code op1, Code op2) {
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| 369 | return operator("or", op1, op2); |
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| 370 | } |
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| 371 | |||
| 372 | @Override
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| 373 | public Code and(Code op1, Code op2) {
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| 374 | return operator("and", op1, op2); |
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| 375 | } |
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| 376 | |||
| 377 | @Override
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| 378 | public Code like(Code op1, Code op2) {
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| 379 | return operator("like", op1, op2); |
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| 380 | } |
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| 381 | |||
| 382 | @Override
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| 383 | public Code ilike(Code op1, Code op2) {
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| 384 | return operator("ilike", op1, op2); |
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| 385 | } |
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| 386 | |||
| 387 | @Override
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| 388 | 43532 | jjdelcerro | public Code regexp(Code op1, Code op2) {
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| 389 | return operator("~", op1, op2); |
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| 390 | } |
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| 391 | |||
| 392 | @Override
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| 393 | 43512 | jjdelcerro | public Code lt(Code op1, Code op2) {
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| 394 | return operator("<", op1, op2); |
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| 395 | } |
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| 396 | |||
| 397 | @Override
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| 398 | public Code gt(Code op1, Code op2) {
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| 399 | return operator(">", op1, op2); |
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| 400 | } |
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| 401 | |||
| 402 | @Override
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| 403 | public Code le(Code op1, Code op2) {
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| 404 | return operator("<=", op1, op2); |
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| 405 | } |
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| 406 | |||
| 407 | @Override
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| 408 | public Code ge(Code op1, Code op2) {
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| 409 | return operator(">=", op1, op2); |
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| 410 | } |
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| 411 | |||
| 412 | @Override
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| 413 | public Code eq(Code op1, Code op2) {
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| 414 | return operator("=", op1, op2); |
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| 415 | } |
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| 416 | |||
| 417 | @Override
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| 418 | public Code ne(Code op1, Code op2) {
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| 419 | return operator("<>", op1, op2); |
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| 420 | } |
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| 421 | |||
| 422 | @Override
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| 423 | public Code is(Code op1, Code op2) {
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| 424 | return operator("is", op1, op2); |
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| 425 | } |
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| 426 | |||
| 427 | 43939 | jjdelcerro | @Override
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| 428 | public Code getattr(Code obj, String attrname) { |
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| 429 | Arguments args = args(); |
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| 430 | ((BaseArguments)args).add(obj); |
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| 431 | ((BaseArguments)args).add(constant(attrname)); |
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| 432 | return function("getattr", args); |
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| 433 | } |
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| 434 | |||
| 435 | 43512 | jjdelcerro | } |