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Copy pathMonetGeometryGenerator.java
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160 lines (140 loc) · 4.86 KB
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package sqlancer.monet;
import sqlancer.Randomly;
public final class MonetGeometryGenerator {
private MonetGeometryGenerator() {
}
public enum GeometryType {
POINT("POINT"), LINESTRING("LINESTRING"), POLYGON("POLYGON"), MULTIPOINT("MULTIPOINT"),
MULTILINESTRING("MULTILINESTRING"), MULTIPOLYGON("MULTIPOLYGON")/*
* , GEOMETRYCOLLECTION("GEOMETRYCOLLECTION")
*/;
private final String name;
GeometryType(String name) {
this.name = name;
}
public String getName() {
return name;
}
public static GeometryType getRandom() {
return Randomly.fromOptions(values());
}
}
public enum GeometryExtension {
EMPTY(""), Z("Z"), M("M"), ZM("ZM");
private final String name;
GeometryExtension(String name) {
this.name = name;
}
public String getName() {
return name;
}
public static GeometryExtension getRandom() {
return Randomly.fromOptions(values());
}
}
private static void generatePoint(Randomly r, StringBuilder sb, int ndims) {
for (int i = 0; i < ndims;) {
if (i++ != 0) {
sb.append(" ");
}
sb.append(r.getIntegerBounded(100));
}
}
private static void generateLine(Randomly r, StringBuilder sb, int ndims, int npoints) {
for (int j = 0; j < npoints;) {
if (j++ != 0) {
sb.append(", ");
}
generatePoint(r, sb, ndims);
}
}
private static void generatePolygon(Randomly r, StringBuilder sb, int ndims, int npoints, int nlines) {
for (int k = 0; k < nlines;) {
if (k++ != 0) {
sb.append(", ");
}
sb.append("(");
generateLine(r, sb, ndims, npoints);
sb.append(")");
}
}
public static String generateRandomGeometry(Randomly r) {
GeometryType gt = GeometryType.getRandom();
GeometryExtension et = GeometryExtension.getRandom();
StringBuilder sb = new StringBuilder();
int ndims = 0;
int npoints = 0;
int nlines = 0;
int npoligons = 0;
sb.append(gt.getName()).append(" ").append(et.getName()).append(" ");
switch (gt) {
case POINT:
ndims = Randomly.smallNumber() + 2;
sb.append("(");
generatePoint(r, sb, ndims);
sb.append(")");
break;
case MULTIPOINT:
ndims = Randomly.smallNumber() + 2;
npoints = Randomly.smallNumber() + 1;
if (Randomly.getBooleanWithRatherLowProbability()) {
sb.append(" EMPTY");
} else {
sb.append("(");
generateLine(r, sb, ndims, npoints);
sb.append(")");
}
break;
case LINESTRING:
ndims = Randomly.smallNumber() + 2;
npoints = Randomly.smallNumber() + 1;
sb.append("(");
generateLine(r, sb, ndims, npoints);
sb.append(")");
break;
case MULTILINESTRING:
ndims = Randomly.smallNumber() + 2;
npoints = Randomly.smallNumber() + 1;
nlines = Randomly.smallNumber() + 1;
if (Randomly.getBooleanWithRatherLowProbability()) {
sb.append(" EMPTY");
} else {
sb.append("(");
generatePolygon(r, sb, ndims, npoints, nlines);
sb.append(")");
}
break;
case POLYGON:
ndims = Randomly.smallNumber() + 2;
npoints = Randomly.smallNumber() + 1;
nlines = Randomly.smallNumber() + 1;
sb.append("(");
generatePolygon(r, sb, ndims, npoints, nlines);
sb.append(")");
break;
case MULTIPOLYGON:
ndims = Randomly.smallNumber() + 2;
npoints = Randomly.smallNumber() + 1;
nlines = Randomly.smallNumber() + 1;
npoligons = Randomly.smallNumber() + 1;
if (Randomly.getBooleanWithRatherLowProbability()) {
sb.append(" EMPTY");
} else {
sb.append("(");
for (int k = 0; k < npoligons;) {
if (k++ != 0) {
sb.append(", ");
}
sb.append("(");
generatePolygon(r, sb, ndims, npoints, nlines);
sb.append(")");
}
sb.append(")");
}
break;
default:
throw new AssertionError();
}
return sb.toString();
}
}