Example usage for org.eclipse.jdt.core.util IFieldInfo getConstantValueAttribute

Introduction

In this page you can find the example usage for org.eclipse.jdt.core.util IFieldInfo getConstantValueAttribute.

Prototype

IConstantValueAttribute getConstantValueAttribute();

Source Link

Document

Answer back the constant value attribute of this field info if specified, null otherwise.

Usage

From source file:org.eclipse.jpt.common.eclipselink.core.internal.libval.EclipseLinkLibraryValidatorTools.java

License:Open Source License

private static IStatus validateEclipseLinkVersion(Iterable<IClasspathEntry> libraryEntries,
        VersionRange versionRange) {//from  w  w  w . ja va  2  s .c  o m
    Version version = null;
    for (IClasspathEntry libraryEntry : libraryEntries) {
        if (libraryEntry.getEntryKind() == IClasspathEntry.CPE_LIBRARY) {
            String versionString = null;
            IClassFileReader classReader = buildClassFileReader(libraryEntry);
            if (classReader != null) {
                for (IFieldInfo field : classReader.getFieldInfos()) {
                    if (Arrays.equals(field.getName(), VERSION_FIELD_NAME_CHAR_ARRAY)) {
                        try {
                            versionString = field.getConstantValueAttribute().getConstantValue()
                                    .getStringValue();
                        } catch (RuntimeException ex) {
                            // assume the field has no value
                        }
                        break;
                    }
                }
            }
            if (versionString != null) {
                if (version != null) {
                    return buildErrorStatus(
                            JptCommonEclipseLinkCoreMessages.ECLIPSELINK_LIBRARY_VALIDATOR__MULTIPLE_ECLIPSELINK_VERSIONS);
                }
                version = new Version(versionString);
            }
        }
    }

    if (version == null) {
        return buildErrorStatus(
                JptCommonEclipseLinkCoreMessages.ECLIPSELINK_LIBRARY_VALIDATOR__NO_ECLIPSELINK_VERSION);
    }

    if (!versionRange.isIncluded(version)) {
        return buildErrorStatus(
                JptCommonEclipseLinkCoreMessages.ECLIPSELINK_LIBRARY_VALIDATOR__IMPROPER_ECLIPSELINK_VERSION);
    }

    return Status.OK_STATUS;
}

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